293:
5109:
4395:
1711:
4801:
4001:
1756:
1105:
1008:
912:
1438:
1286:), with one proton and four neutrons, is highly unstable. It has been synthesized in the lab by bombarding tritium with fast-moving tritons; one triton captures two neutrons from the other, becoming a nucleus with one proton and four neutrons. The remaining proton may be detected, and the existence of H deduced. It decays by double
1039:), the other stable hydrogen isotope, has one proton and one neutron in its nucleus, called a deuteron. H comprises 26–184 ppm (by population, not mass) of hydrogen on Earth; the lower number tends to be found in hydrogen gas and the higher enrichment (150 ppm) is typical of
1706:{\displaystyle {\begin{array}{rcl}\\{\ce {^{3}_{1}H}}&{\ce {->}}&{\ce {{^{3}_{2}He}+e^{-}}}\\{\ce {^{4}_{1}H}}&{\ce {->}}&{\ce {{^{3}_{1}H}+{^{1}_{0}n}}}\\{\ce {^{5}_{1}H}}&{\ce {->}}&{\ce {{^{3}_{1}H}+{2_{0}^{1}n}}}\\{}\end{array}}}
1404:
atoms; all six of the helium-8's neutrons were donated to the hydrogen nucleus. The two remaining protons were detected by the "RIKEN telescope", a device made of several layers of sensors, positioned behind the target of the RI Beam cyclotron. H has a half-life of
1219:
isotope. It has been synthesized in the laboratory by bombarding tritium with fast-moving deuterons; the triton captured a neutron from the deuteron. The presence of H was deduced by detecting the emitted protons. It decays by
1833:
Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04).
1819:
222:
2576:
2301:
The SNO+ Collaboration; Anderson, M.; Andringa, S.; Arushanova, E.; Asahi, S.; Askins, M.; Auty, D. J.; Back, A. R.; Barnard, Z.; Barros, N.; Bartlett, D. (2019-02-20).
2120:
2097:
2083:
2054:
2025:
274:
2361:
809:# – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
1079:
215:
2150:
Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*".
5470:
5439:
2569:
2452:
G. M. Ter-Akopian; et al. (2002). "Hydrogen-4 and
Hydrogen-5 from t+t and t+d transfer reactions studied with a 57.5-MeV triton beam".
2088:
1193:
uses H and H as its main reactants, giving energy through the loss of mass when the two nuclei collide and fuse at high temperatures.
208:
2105:
2562:
1738:
1393:
1055:(≈23 ppm). Presumably the differential concentration of deuterium in the inner solar system is due to the lower volatility of
1981:
A. A. Korsheninnikov; et al. (2003). "Experimental
Evidence for the Existence of H and for a Specific Structure of He".
285:, may be called protium to disambiguate. (During the early study of radioactivity, some other heavy radioisotopes were given
2372:
5460:
277:) accepts said symbols, but recommends the standard isotopic symbols H and H, to avoid confusion in alphabetic sorting of
1190:
5434:
5429:
1933:
Y. B. Gurov; et al. (2004). "Spectroscopy of superheavy hydrogen isotopes in stopped-pion absorption by nuclei".
292:
2454:
2093:
858:
2540:
4427:
4423:
1168:
1155:. Traces of H occur naturally due to cosmic rays interacting with atmospheric gases. H has also been released in
1078:. Deuterium and its compounds are used as a non-radioactive label in chemical experiments and in solvents for H-
5162:
5158:
4854:
4850:
4553:
4549:
924:
845:
1935:
900:
Decay mode shown is energetically allowed, but has not been experimentally observed to occur in this nuclide.
5372:
5368:
5330:
5326:
5309:
5305:
4679:
4675:
4595:
4591:
4574:
4570:
2705:
2491:
1983:
731:
390:
1760:
5001:
4997:
4959:
4955:
4896:
4892:
4772:
4768:
4751:
4747:
4700:
4696:
4532:
4528:
4469:
4465:
4406:
4402:
3702:
3698:
3681:
3677:
3092:
3088:
2603:
1068:
982:
966:
194:
163:
5288:
5284:
5246:
5242:
5225:
5221:
5204:
5200:
5085:
5081:
4875:
4871:
4812:
4808:
4721:
4717:
4658:
4654:
4637:
4633:
3891:
3887:
3765:
3761:
3723:
3719:
3639:
3635:
3595:
3591:
3460:
3456:
3313:
3309:
3185:
3181:
3050:
3046:
3027:
3023:
2848:
2844:
1248:
2284:
1074:
Deuterium is not radioactive, and is not a significant toxicity hazard. Water enriched in H is called
5393:
5389:
5120:
5116:
4938:
4934:
4917:
4913:
4616:
4612:
4357:
4353:
4306:
4302:
4285:
4281:
4222:
4218:
4159:
4155:
4075:
4071:
4054:
4050:
4012:
4008:
3870:
3866:
3574:
3570:
3502:
3498:
3292:
3288:
3271:
3267:
3250:
3246:
3229:
3225:
3134:
3130:
2955:
2951:
2913:
2909:
2614:
2500:
2463:
2324:
2257:
1992:
1944:
1889:
1164:
1835:
5351:
5347:
5183:
5179:
5141:
5137:
5064:
5060:
5022:
5018:
4980:
4976:
4511:
4507:
4490:
4486:
4448:
4444:
4264:
4260:
4201:
4197:
4138:
4134:
4096:
4092:
4033:
4029:
3963:
3959:
3807:
3803:
3744:
3740:
3660:
3656:
3618:
3614:
3544:
3540:
3523:
3519:
3481:
3477:
3439:
3435:
3206:
3202:
3071:
3067:
2827:
2823:
2109:
5267:
5263:
5043:
5039:
4833:
4829:
4378:
4374:
4117:
4113:
3984:
3980:
3912:
3908:
3828:
3824:
3786:
3782:
3397:
3393:
3376:
3372:
3355:
3351:
3113:
3109:
3006:
3002:
2934:
2930:
2892:
2888:
2797:
2793:
2342:
2314:
1960:
1915:
1186:
1175:
1048:
883:
135:
5465:
5424:
5418:
4327:
4323:
4208:
3933:
3929:
3155:
3151:
2871:
2867:
2516:
2431:
2101:
2008:
1907:
1851:
1083:
401:
88:
68:
59:
4739:
4345:
4243:
4239:
4180:
4176:
3951:
3562:
3418:
3414:
3334:
3330:
3173:
2994:
2976:
2972:
2815:
2762:
2667:
2662:
2657:
2589:
2508:
2471:
2421:
2413:
2332:
2265:
2202:
2159:
2134:
2068:
2039:
2000:
1952:
1897:
1843:
1388:. It was first synthesized in 2003 by a group of Russian, Japanese and French scientists at
1287:
1221:
773:
584:
395:
278:
262:
146:
3849:
3845:
2652:
2647:
2642:
2637:
2632:
2627:
2622:
1179:
286:
254:
years. Heavier isotopes also exist; all are synthetic and have a half-life of less than 1
2504:
2467:
2328:
2261:
1996:
1948:
1893:
1043:. Deuterium on Earth has been enriched with respect to its initial concentration in the
2426:
2401:
2187:
1788:
1087:
965:
The proton has never been observed to decay, so H is considered a stable isotope. Some
951:
348:
108:
1443:
5454:
4434:
2546:
1964:
1919:
1784:
1733:
1261:
1156:
1132:
1056:
1035:
946:
915:
H consists of 1 proton and 1 electron: the only stable nuclide with no neutrons (see
800:( ) spin value – Indicates spin with weak assignment arguments.
382:
360:
341:
93:
2554:
2346:
2130:
2064:
2035:
1086:
and coolant for nuclear reactors. Deuterium is also a potential fuel for commercial
5169:
4861:
4560:
2677:
2609:
1791:. The relationship between years and other time units in NUBASE2020 is as follows:
1216:
1160:
970:
819:
17:
2512:
2004:
1432:. Decay of the heaviest isotopes, H and H, has not been experimentally observed.
985:. As of 2018, experiments have shown that the mean lifetime of the proton is >
5379:
5337:
5316:
4686:
4602:
4581:
2672:
2125:
2059:
2030:
1743:
1717:
1408:
1370:
1346:
1321:
1297:
1276:
1231:
1205:
1137:
1075:
578:
355:
328:
298:
255:
2337:
2302:
2269:
2206:
2163:
1902:
1877:
5008:
4966:
4903:
4779:
4758:
4707:
4539:
4476:
4413:
3709:
3688:
3099:
2248:
Coc, Alain (2009). "Big-bang nucleosynthesis: A probe of the early
Universe".
1141:
756:) is given in concise form in parentheses after the corresponding last digits.
535:
374:
2402:"Vitamin A Absorption Determined in Rats Using a Plasma Isotope Ratio Method"
2303:"Search for invisible modes of nucleon decay in water with the SNO+ detector"
2129:, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "
2063:, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "
2034:, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "
1911:
1855:
5295:
5253:
5232:
5211:
5092:
4882:
4819:
4728:
4665:
4644:
3898:
3772:
3730:
3646:
3602:
3467:
3320:
3192:
3057:
3034:
2855:
2697:
2687:
2682:
2138:
2072:
2043:
1340:
1291:
1225:
1149:
1052:
1002:
950:) is the most common hydrogen isotope, with an abundance of >99.98%. Its
461:
368:
303:
266:
247:
115:
73:
2520:
2435:
2012:
273:. The symbols D and T are sometimes used for deuterium and tritium; IUPAC (
1847:
1755:
265:
whose isotopes have different names that remain in common use today: H is
5400:
5127:
4945:
4924:
4623:
4364:
4313:
4292:
4229:
4166:
4082:
4061:
4019:
3877:
3581:
3509:
3299:
3278:
3257:
3236:
3141:
2962:
2920:
2781:
2417:
1876:
Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (March 2021).
1429:
1401:
1397:
1185:
Tritium can be used in chemical and biological labeling experiments as a
1145:
1044:
1040:
981:
years. If so, then H (and all nuclei now believed to be stable) are only
916:
235:
152:
36:
5358:
5190:
5148:
5071:
5029:
4987:
4518:
4497:
4455:
4271:
4145:
4103:
4040:
3970:
3814:
3751:
3667:
3625:
3551:
3530:
3488:
3446:
3213:
3078:
2834:
2692:
2585:
1836:"Standard atomic weights of the elements 2021 (IUPAC Technical Report)"
1748:
1385:
1336:
1136:), contains one proton and two neutrons in its nucleus (triton). It is
1099:
503:
311:
282:
270:
243:
130:
32:
2475:
1956:
5274:
5050:
4840:
4385:
4124:
3991:
3919:
3835:
3793:
3404:
3383:
3362:
3120:
3013:
2941:
2899:
2804:
1815:
1381:
1332:
955:
1633:
1550:
1473:
1104:
1007:
911:
2489:
A. A. Korsheninnikov; et al. (2001). "Superheavy
Hydrogen H".
2319:
2186:
Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021).
258:(10 s). Of these, H is the least stable, while H is the most.
4334:
3940:
3162:
2878:
1389:
1103:
1060:
1006:
910:
291:
869:
Produced in BBN, but not primordial, as all of it has decayed to
4250:
4187:
3425:
3341:
2983:
2223:
2558:
3856:
1878:"The NUBASE2020 evaluation of nuclear physics properties \ast"
1064:
2250:
Nuclear
Instruments and Methods in Physics Research Section A
835:
are the only stable nuclides with more protons than neutrons.
2218:
2216:
1787:
to convert between years and other units of time, not the
1779:
1777:
1011:
Deuterium consists of 1 proton, 1 neutron, and 1 electron.
1428:
H and H decay directly to H, which then decays to stable
1174:
The most common way to produce H is to bombard a natural
1108:
Tritium consists of 1 proton, 2 neutrons, and 1 electron.
791:
as daughter – Daughter product is stable.
1724:) for all these isotopes except H, which is in years.
1441:
296:
The three most stable isotopes of hydrogen: protium (
1215:), with one proton and three neutrons, is a highly
1051:(≈27 ppm, by atom fraction) and older parts of the
178:
162:
2539:
2369:Pharmaceuticals and Medical Devices Agency (Japan)
1705:
2188:"The NUBASE2020 evaluation of nuclear properties"
2084:International Union of Pure and Applied Chemistry
1309:) – the shortest half-life of any known nuclide.
1063:and planets exposed to significant heat from the
275:International Union of Pure and Applied Chemistry
246:: H, H, and H. H and H are stable, while H has a
2400:Green, Joanne Balmer; Green, Michael H. (2020).
1976:
1974:
1059:and compounds, enriching deuterium fractions in
2362:"SARS-CoV-2 mRNA Vaccine (BNT162, PF-07302048)"
1751:– acts like an exotic light isotope of hydrogen
896:
894:
892:
2447:
2445:
2092:(IUPAC Recommendations 2005). Cambridge (UK):
923:"Protium" redirects here. For other uses, see
2570:
2181:
2179:
2177:
2175:
2173:
1871:
1869:
1867:
1865:
216:
8:
30:
27:Hydrogen with different numbers of neutrons
2577:
2563:
2555:
752:( ) – Uncertainty (1
732:
223:
209:
2425:
2336:
2318:
2285:"Grand Unified Theories and Proton Decay"
1901:
1697:
1682:
1677:
1676:
1671:
1652:
1651:
1640:
1628:
1627:
1609:
1588:
1569:
1568:
1557:
1545:
1544:
1526:
1515:
1492:
1491:
1480:
1468:
1467:
1449:
1442:
1440:
289:, but such names are rarely used today.)
919:for a discussion of why no others exist)
487:
445:
333:
52:
1807:
1773:
1080:nuclear magnetic resonance spectroscopy
745:
29:
2774:
327:Note: "y" means year, but "ys" means
139:
134:
124:
119:
107:
102:
7:
1256:was given to the H that powered the
2371:. 2.6.5.5B, pp. 6–8. Archived from
2089:Nomenclature of Inorganic Chemistry
1816:"Standard Atomic Weights: Hydrogen"
973:can occur with a half-life between
969:proposed in the 1970s predict that
2126:Compendium of Chemical Terminology
2060:Compendium of Chemical Terminology
2031:Compendium of Chemical Terminology
25:
1264:captured from the United States.
242:H) has three naturally occurring
5107:
4799:
4738:
4393:
4344:
3999:
3950:
3561:
3172:
2993:
2814:
2761:
2290:. Boston University. p. 15.
1754:
1739:Hydrogen isotope biogeochemistry
1394:Radioactive Isotope Beam Factory
1793:1 y = 365.2422 d = 31 556 926 s
726:This table header & footer:
1783:Note that NUBASE2020 uses the
882:Tritium occurs naturally as a
1:
2513:10.1103/PhysRevLett.87.092501
2005:10.1103/PhysRevLett.90.082501
5471:Lists of isotopes by element
2541:"Hydrogen-7 makes its debut"
1744:Hydrogen-4.1 (Muonic helium)
1246:In the 1955 satirical novel
958:, so it has the formal name
2224:"Atomic Weight of Hydrogen"
1082:. Heavy water is used as a
5487:
4788:
3041:
2862:
2788:
2455:AIP Conference Proceedings
2338:10.1103/PhysRevD.99.032008
2270:10.1016/j.nima.2009.07.052
1840:Pure and Applied Chemistry
1097:
1067:over billions of years of
1000:
954:consists of only a single
922:
723:
5414:
5104:
2596:
2538:Dumé, B. (7 March 2003).
1666:
1623:
1602:
1583:
1540:
1506:
1463:
1178:, Li, with neutrons in a
672:
670:
667:
656:
647:
644:
641:
638:
495:
453:
408:
400:
389:
381:
373:
367:
354:
347:
340:
336:
204:
129:
114:
99:
58:
55:
51:
2406:The Journal of Nutrition
2207:10.1088/1674-1137/abddae
2164:10.1088/1674-1137/abddaf
1936:Physics of Atomic Nuclei
1903:10.1088/1674-1137/abddae
1659:
1653:
1616:
1610:
1595:
1589:
1576:
1570:
1533:
1527:
1499:
1493:
1456:
1450:
1191:Deuterium–tritium fusion
925:Protium (disambiguation)
846:Big Bang nucleosynthesis
2750:Chalcogens
2492:Physical Review Letters
2139:10.1351/goldbook.P04903
2073:10.1351/goldbook.T06513
2044:10.1351/goldbook.D01648
1984:Physical Review Letters
1707:
1109:
1069:solar system evolution
1012:
997:Hydrogen-2 (deuterium)
983:observationally stable
967:Grand Unified Theories
920:
857:One of the few stable
319:
164:Standard atomic weight
1848:10.1515/pac-2019-0603
1708:
1249:The Mouse That Roared
1169:self-powered lighting
1107:
1010:
914:
907:Hydrogen-1 (protium)
310: = 2), and
295:
261:Hydrogen is the only
5461:Isotopes of hydrogen
1763:at Wikimedia Commons
1761:Isotopes of hydrogen
1439:
1165:isotope geochemistry
1094:Hydrogen-3 (tritium)
405:(mole fraction)
5440:Isotopes by element
5435:Metastable isotopes
2505:2001PhRvL..87i2501K
2468:2002AIPC..610..920T
2329:2019PhRvD..99c2008A
2262:2009NIMPA.611..224C
2110:Electronic version.
1997:2003PhRvL..90h2501K
1949:2005PAN....68..491G
1894:2021ChPhC..45c0001K
1716:Decay times are in
1687:
1645:
1562:
1485:
1153:12.32(2) years
417:Range of variation
48:
18:Isotope of hydrogen
5430:Tables of nuclides
2418:10.1093/jn/nxaa092
2388:-Labelled LNP-mRNA
2283:Ed Kearns (2009).
1703:
1701:
1675:
1260:that the Duchy of
1187:radioactive tracer
1176:isotope of lithium
1110:
1049:outer solar system
1013:
921:
884:cosmogenic nuclide
414:Normal proportion
320:
5448:
5447:
5419:Table of nuclides
5409:
5408:
5396:
5375:
5354:
5333:
5312:
5291:
5270:
5249:
5228:
5207:
5186:
5165:
5144:
5123:
5088:
5067:
5046:
5025:
5004:
4983:
4962:
4941:
4920:
4899:
4878:
4857:
4836:
4815:
4775:
4754:
4724:
4703:
4682:
4661:
4640:
4619:
4598:
4577:
4556:
4535:
4514:
4493:
4472:
4451:
4430:
4409:
4381:
4360:
4330:
4309:
4288:
4267:
4246:
4225:
4204:
4183:
4162:
4141:
4120:
4099:
4078:
4057:
4036:
4015:
3987:
3966:
3936:
3915:
3894:
3873:
3852:
3831:
3810:
3789:
3768:
3747:
3726:
3705:
3684:
3663:
3642:
3621:
3598:
3577:
3547:
3526:
3505:
3484:
3463:
3442:
3421:
3400:
3379:
3358:
3337:
3316:
3295:
3274:
3253:
3232:
3209:
3188:
3158:
3137:
3116:
3095:
3074:
3053:
3030:
3009:
2979:
2958:
2937:
2916:
2895:
2874:
2851:
2830:
2800:
2777:
2747:Pnictogens
2708:
2606:
2590:chemical elements
2476:10.1063/1.1470062
2307:Physical Review D
2195:Chinese Physics C
2152:Chinese Physics C
1957:10.1134/1.1891200
1882:Chinese Physics C
1759:Media related to
1690:
1658:
1657:
1656:
1646:
1643:
1639:
1615:
1614:
1613:
1594:
1593:
1592:
1575:
1574:
1573:
1563:
1560:
1556:
1532:
1531:
1530:
1514:
1498:
1497:
1496:
1486:
1483:
1479:
1455:
1454:
1453:
1290:into H and has a
1163:, as a tracer in
1084:neutron moderator
779:
778:
743:
742:
402:Natural abundance
302: = 1),
279:chemical formulas
233:
232:
158:
157:
16:(Redirected from
5478:
5394:§ List
5388:
5373:§ List
5367:
5352:§ List
5346:
5331:§ List
5325:
5310:§ List
5304:
5289:§ List
5283:
5268:§ List
5262:
5247:§ List
5241:
5226:§ List
5220:
5205:§ List
5199:
5184:§ List
5178:
5163:§ List
5157:
5142:§ List
5136:
5121:§ List
5115:
5111:
5110:
5086:§ List
5080:
5065:§ List
5059:
5044:§ List
5038:
5023:§ List
5017:
5002:§ List
4996:
4981:§ List
4975:
4960:§ List
4954:
4939:§ List
4933:
4918:§ List
4912:
4897:§ List
4891:
4876:§ List
4870:
4855:§ List
4849:
4834:§ List
4828:
4813:§ List
4807:
4803:
4802:
4773:§ List
4767:
4752:§ List
4746:
4742:
4722:§ List
4716:
4701:§ List
4695:
4680:§ List
4674:
4659:§ List
4653:
4638:§ List
4632:
4617:§ List
4611:
4596:§ List
4590:
4575:§ List
4569:
4554:§ List
4548:
4533:§ List
4527:
4512:§ List
4506:
4491:§ List
4485:
4470:§ List
4464:
4449:§ List
4443:
4428:§ List
4422:
4407:§ List
4401:
4397:
4396:
4379:§ List
4373:
4358:§ List
4352:
4348:
4328:§ List
4322:
4307:§ List
4301:
4286:§ List
4280:
4265:§ List
4259:
4244:§ List
4238:
4223:§ List
4217:
4202:§ List
4196:
4181:§ List
4175:
4160:§ List
4154:
4139:§ List
4133:
4118:§ List
4112:
4097:§ List
4091:
4076:§ List
4070:
4055:§ List
4049:
4034:§ List
4028:
4013:§ List
4007:
4003:
4002:
3985:§ List
3979:
3964:§ List
3958:
3954:
3934:§ List
3928:
3913:§ List
3907:
3892:§ List
3886:
3871:§ List
3865:
3850:§ List
3844:
3829:§ List
3823:
3808:§ List
3802:
3787:§ List
3781:
3766:§ List
3760:
3745:§ List
3739:
3724:§ List
3718:
3703:§ List
3697:
3682:§ List
3676:
3661:§ List
3655:
3640:§ List
3634:
3619:§ List
3613:
3596:§ List
3590:
3575:§ List
3569:
3565:
3545:§ List
3539:
3524:§ List
3518:
3503:§ List
3497:
3482:§ List
3476:
3461:§ List
3455:
3440:§ List
3434:
3419:§ List
3413:
3398:§ List
3392:
3377:§ List
3371:
3356:§ List
3350:
3335:§ List
3329:
3314:§ List
3308:
3293:§ List
3287:
3272:§ List
3266:
3251:§ List
3245:
3230:§ List
3224:
3207:§ List
3201:
3186:§ List
3180:
3176:
3156:§ List
3150:
3135:§ List
3129:
3114:§ List
3108:
3093:§ List
3087:
3072:§ List
3066:
3051:§ List
3045:
3028:§ List
3022:
3007:§ List
3001:
2997:
2977:§ List
2971:
2956:§ List
2950:
2935:§ List
2929:
2914:§ List
2908:
2893:§ List
2887:
2872:§ List
2866:
2849:§ List
2843:
2828:§ List
2822:
2818:
2798:§ List
2792:
2775:§ List
2769:
2765:
2704:
2602:
2599:
2598:
2579:
2572:
2565:
2556:
2551:
2543:
2525:
2524:
2486:
2480:
2479:
2449:
2440:
2439:
2429:
2412:(7): 1977–1981.
2397:
2391:
2390:
2385:
2383:
2378:on 24 March 2022
2377:
2366:
2357:
2351:
2350:
2340:
2322:
2298:
2292:
2291:
2289:
2280:
2274:
2273:
2256:(2–3): 224–230.
2245:
2239:
2238:
2236:
2234:
2220:
2211:
2210:
2192:
2183:
2168:
2167:
2147:
2141:
2118:
2112:
2081:
2075:
2052:
2046:
2023:
2017:
2016:
1978:
1969:
1968:
1930:
1924:
1923:
1905:
1873:
1860:
1859:
1830:
1824:
1823:
1812:
1795:
1794:
1781:
1758:
1723:
1712:
1710:
1709:
1704:
1702:
1698:
1692:
1691:
1688:
1686:
1681:
1667:
1654:
1648:
1647:
1644:
1641:
1637:
1629:
1624:
1611:
1604:
1603:
1590:
1584:
1571:
1565:
1564:
1561:
1558:
1554:
1546:
1541:
1528:
1521:
1520:
1519:
1512:
1507:
1494:
1488:
1487:
1484:
1481:
1477:
1469:
1464:
1451:
1445:
1419:
1417:
1411:
1379:
1377:
1357:
1355:
1349:
1330:
1328:
1308:
1306:
1300:
1288:neutron emission
1285:
1283:
1242:
1240:
1234:
1222:neutron emission
1214:
1212:
1159:. It is used in
1154:
1135:
1130:
1127:
1124:
1038:
1033:
1030:
1027:
992:
990:
980:
976:
949:
944:
941:
938:
901:
898:
887:
880:
874:
867:
861:
855:
849:
842:
836:
829:
823:
816:
810:
807:
801:
798:
792:
786:
780:
774:Neutron emission
767:
766:
765:Modes of decay:
763:
757:
750:
739:
734:
706:
705:652(558) ys
700:
698:
659:
654:
652:
621:
616:
614:
581:
573:
571:
532:
527:
525:
522:
519:
485:
483:
480:
477:
443:
441:
438:
435:
406:
364:
334:
323:List of isotopes
318: = 3).
253:
225:
218:
211:
192:
190:
174:
149:
142:
122:
105:
85:
53:
49:
47:
46:
21:
5486:
5485:
5481:
5480:
5479:
5477:
5476:
5475:
5451:
5450:
5449:
5444:
5410:
5404:
5397:
5383:
5376:
5362:
5355:
5341:
5334:
5320:
5313:
5299:
5292:
5278:
5271:
5257:
5250:
5236:
5229:
5215:
5208:
5194:
5187:
5173:
5166:
5152:
5145:
5131:
5124:
5108:
5096:
5089:
5075:
5068:
5054:
5047:
5033:
5026:
5012:
5005:
4991:
4984:
4970:
4963:
4949:
4942:
4928:
4921:
4907:
4900:
4886:
4879:
4865:
4858:
4844:
4837:
4823:
4816:
4800:
4783:
4776:
4762:
4755:
4732:
4725:
4711:
4704:
4690:
4683:
4669:
4662:
4648:
4641:
4627:
4620:
4606:
4599:
4585:
4578:
4564:
4557:
4543:
4536:
4522:
4515:
4501:
4494:
4480:
4473:
4459:
4452:
4438:
4431:
4417:
4410:
4394:
4389:
4382:
4368:
4361:
4338:
4331:
4317:
4310:
4296:
4289:
4275:
4268:
4254:
4247:
4233:
4226:
4212:
4205:
4191:
4184:
4170:
4163:
4149:
4142:
4128:
4121:
4107:
4100:
4086:
4079:
4065:
4058:
4044:
4037:
4023:
4016:
4000:
3995:
3988:
3974:
3967:
3944:
3937:
3923:
3916:
3902:
3895:
3881:
3874:
3860:
3853:
3839:
3832:
3818:
3811:
3797:
3790:
3776:
3769:
3755:
3748:
3734:
3727:
3713:
3706:
3692:
3685:
3671:
3664:
3650:
3643:
3629:
3622:
3606:
3599:
3585:
3578:
3555:
3548:
3534:
3527:
3513:
3506:
3492:
3485:
3471:
3464:
3450:
3443:
3429:
3422:
3408:
3401:
3387:
3380:
3366:
3359:
3345:
3338:
3324:
3317:
3303:
3296:
3282:
3275:
3261:
3254:
3240:
3233:
3217:
3210:
3196:
3189:
3166:
3159:
3145:
3138:
3124:
3117:
3103:
3096:
3082:
3075:
3061:
3054:
3038:
3031:
3017:
3010:
2987:
2980:
2966:
2959:
2945:
2938:
2924:
2917:
2903:
2896:
2882:
2875:
2859:
2852:
2838:
2831:
2808:
2801:
2785:
2778:
2753:Halogens
2717:
2712:
2592:
2583:
2537:
2534:
2532:Further reading
2529:
2528:
2488:
2487:
2483:
2451:
2450:
2443:
2399:
2398:
2394:
2381:
2379:
2375:
2364:
2359:
2358:
2354:
2300:
2299:
2295:
2287:
2282:
2281:
2277:
2247:
2246:
2242:
2232:
2230:
2222:
2221:
2214:
2190:
2185:
2184:
2171:
2149:
2148:
2144:
2119:
2115:
2082:
2078:
2053:
2049:
2024:
2020:
1980:
1979:
1972:
1932:
1931:
1927:
1875:
1874:
1863:
1832:
1831:
1827:
1814:
1813:
1809:
1804:
1799:
1798:
1792:
1782:
1775:
1770:
1730:
1721:
1700:
1699:
1694:
1693:
1649:
1625:
1606:
1605:
1566:
1542:
1523:
1522:
1511:
1489:
1465:
1446:
1437:
1436:
1426:
1415:
1413:
1406:
1375:
1373:
1364:
1353:
1351:
1344:
1326:
1324:
1315:
1304:
1302:
1295:
1281:
1279:
1270:
1238:
1236:
1229:
1210:
1208:
1199:
1180:nuclear reactor
1152:
1128:
1125:
1122:
1120:
1102:
1096:
1031:
1028:
1025:
1023:
1005:
999:
988:
986:
978:
974:
942:
939:
936:
934:
928:
909:
904:
899:
890:
881:
877:
868:
864:
856:
852:
843:
839:
830:
826:
817:
813:
808:
804:
799:
795:
787:
783:
764:
760:
751:
747:
738:
724:
704:
696:
694:
658:294(67) ys
657:
650:
648:
619:
612:
610:
576:
569:
567:
531:12.32(2) y
530:
523:
520:
517:
515:
481:
478:
475:
473:
439:
436:
433:
431:
404:
398:
394:
387:
384:
379:
376:
371:
365:
358:
338:
325:
251:
241:
229:
200:
188:
186:
172:
166:
145:
140:
120:
103:
83:
76:
69:abundance
44:
40:
31:
28:
23:
22:
15:
12:
11:
5:
5484:
5482:
5474:
5473:
5468:
5463:
5453:
5452:
5446:
5445:
5443:
5442:
5437:
5432:
5427:
5421:
5415:
5412:
5411:
5407:
5406:
5398:
5387:
5385:
5377:
5366:
5364:
5356:
5345:
5343:
5335:
5324:
5322:
5314:
5303:
5301:
5293:
5282:
5280:
5272:
5261:
5259:
5251:
5240:
5238:
5230:
5219:
5217:
5209:
5198:
5196:
5188:
5177:
5175:
5167:
5156:
5154:
5146:
5135:
5133:
5125:
5114:
5112:
5105:
5102:
5101:
5098:
5090:
5079:
5077:
5069:
5058:
5056:
5048:
5037:
5035:
5027:
5016:
5014:
5006:
4995:
4993:
4985:
4974:
4972:
4964:
4953:
4951:
4943:
4932:
4930:
4922:
4911:
4909:
4901:
4890:
4888:
4880:
4869:
4867:
4859:
4848:
4846:
4838:
4827:
4825:
4817:
4806:
4804:
4797:
4795:
4793:
4790:
4789:
4786:
4785:
4777:
4766:
4764:
4756:
4745:
4743:
4735:
4734:
4726:
4715:
4713:
4705:
4694:
4692:
4684:
4673:
4671:
4663:
4652:
4650:
4642:
4631:
4629:
4621:
4610:
4608:
4600:
4589:
4587:
4579:
4568:
4566:
4558:
4547:
4545:
4537:
4526:
4524:
4516:
4505:
4503:
4495:
4484:
4482:
4474:
4463:
4461:
4453:
4442:
4440:
4432:
4421:
4419:
4411:
4400:
4398:
4391:
4383:
4372:
4370:
4362:
4351:
4349:
4341:
4340:
4332:
4321:
4319:
4311:
4300:
4298:
4290:
4279:
4277:
4269:
4258:
4256:
4248:
4237:
4235:
4227:
4216:
4214:
4206:
4195:
4193:
4185:
4174:
4172:
4164:
4153:
4151:
4143:
4132:
4130:
4122:
4111:
4109:
4101:
4090:
4088:
4080:
4069:
4067:
4059:
4048:
4046:
4038:
4027:
4025:
4017:
4006:
4004:
3997:
3989:
3978:
3976:
3968:
3957:
3955:
3947:
3946:
3938:
3927:
3925:
3917:
3906:
3904:
3896:
3885:
3883:
3875:
3864:
3862:
3854:
3843:
3841:
3833:
3822:
3820:
3812:
3801:
3799:
3791:
3780:
3778:
3770:
3759:
3757:
3749:
3738:
3736:
3728:
3717:
3715:
3707:
3696:
3694:
3686:
3675:
3673:
3665:
3654:
3652:
3644:
3633:
3631:
3623:
3612:
3610:
3608:
3600:
3589:
3587:
3579:
3568:
3566:
3558:
3557:
3549:
3538:
3536:
3528:
3517:
3515:
3507:
3496:
3494:
3486:
3475:
3473:
3465:
3454:
3452:
3444:
3433:
3431:
3423:
3412:
3410:
3402:
3391:
3389:
3381:
3370:
3368:
3360:
3349:
3347:
3339:
3328:
3326:
3318:
3307:
3305:
3297:
3286:
3284:
3276:
3265:
3263:
3255:
3244:
3242:
3234:
3223:
3221:
3219:
3211:
3200:
3198:
3190:
3179:
3177:
3169:
3168:
3160:
3149:
3147:
3139:
3128:
3126:
3118:
3107:
3105:
3097:
3086:
3084:
3076:
3065:
3063:
3055:
3044:
3042:
3040:
3032:
3021:
3019:
3011:
3000:
2998:
2990:
2989:
2981:
2970:
2968:
2960:
2949:
2947:
2939:
2928:
2926:
2918:
2907:
2905:
2897:
2886:
2884:
2876:
2865:
2863:
2861:
2853:
2842:
2840:
2832:
2821:
2819:
2811:
2810:
2802:
2791:
2789:
2787:
2779:
2768:
2766:
2758:
2757:
2754:
2751:
2748:
2745:
2743:
2741:
2739:
2737:
2735:
2733:
2731:
2729:
2727:
2725:
2723:
2721:
2719:
2714:
2713:alkali metals
2709:
2701:
2700:
2695:
2690:
2685:
2680:
2675:
2670:
2665:
2660:
2655:
2650:
2645:
2640:
2635:
2630:
2625:
2620:
2617:
2612:
2607:
2597:
2594:
2593:
2584:
2582:
2581:
2574:
2567:
2559:
2553:
2552:
2533:
2530:
2527:
2526:
2481:
2441:
2392:
2360:Pfizer Japan.
2352:
2293:
2275:
2240:
2212:
2169:
2142:
2113:
2108:. p. 48.
2076:
2047:
2018:
1970:
1943:(3): 491–497.
1925:
1861:
1825:
1806:
1805:
1803:
1800:
1797:
1796:
1789:Gregorian year
1772:
1771:
1769:
1766:
1765:
1764:
1752:
1746:
1741:
1736:
1729:
1726:
1714:
1713:
1696:
1695:
1685:
1680:
1674:
1670:
1665:
1662:
1650:
1636:
1632:
1626:
1622:
1619:
1608:
1607:
1601:
1598:
1587:
1582:
1579:
1567:
1553:
1549:
1543:
1539:
1536:
1525:
1524:
1518:
1510:
1505:
1502:
1490:
1476:
1472:
1466:
1462:
1459:
1448:
1447:
1444:
1425:
1422:
1407:652(558)
1396:by bombarding
1363:
1360:
1314:
1311:
1269:
1266:
1224:into H with a
1198:
1195:
1098:Main article:
1095:
1092:
1088:nuclear fusion
1001:Main article:
998:
995:
908:
905:
903:
902:
888:
875:
862:
859:odd-odd nuclei
850:
837:
824:
811:
802:
793:
781:
777:
776:
771:
758:
744:
741:
740:
737:
736:
728:
721:
720:
718:
716:
713:
710:
707:
702:
692:
689:
686:
682:
681:
678:
674:
673:
671:
669:
666:
663:
660:
655:
646:
643:
640:
636:
635:
633:
631:
628:
625:
622:
617:
608:
605:
602:
598:
597:
595:
593:
590:
587:
582:
574:
565:
562:
559:
555:
554:
551:
549:
546:
543:
538:
533:
528:
513:
510:
507:
500:
499:
496:
494:
491:
486:
471:
468:
465:
458:
457:
454:
452:
449:
444:
429:
426:
423:
419:
418:
415:
411:
410:
407:
399:
388:
380:
372:
366:
353:
346:
339:
324:
321:
239:
231:
230:
228:
227:
220:
213:
205:
202:
201:
199:
198:
184:
181:
179:
176:
175:
170:
160:
159:
156:
155:
150:
143:
138:
133:
127:
126:
123:
118:
112:
111:
106:
101:
97:
96:
91:
86:
81:
71:
66:
63:
62:
57:
56:Main isotopes
42:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
5483:
5472:
5469:
5467:
5464:
5462:
5459:
5458:
5456:
5441:
5438:
5436:
5433:
5431:
5428:
5426:
5422:
5420:
5417:
5416:
5413:
5403:
5402:
5395:
5391:
5386:
5382:
5381:
5374:
5370:
5365:
5361:
5360:
5353:
5349:
5344:
5340:
5339:
5332:
5328:
5323:
5319:
5318:
5311:
5307:
5302:
5298:
5297:
5290:
5286:
5281:
5277:
5276:
5269:
5265:
5260:
5256:
5255:
5248:
5244:
5239:
5235:
5234:
5227:
5223:
5218:
5214:
5213:
5206:
5202:
5197:
5193:
5192:
5185:
5181:
5176:
5172:
5171:
5164:
5160:
5155:
5151:
5150:
5143:
5139:
5134:
5130:
5129:
5122:
5118:
5113:
5106:
5103:
5099:
5095:
5094:
5087:
5083:
5078:
5074:
5073:
5066:
5062:
5057:
5053:
5052:
5045:
5041:
5036:
5032:
5031:
5024:
5020:
5015:
5011:
5010:
5003:
4999:
4994:
4990:
4989:
4982:
4978:
4973:
4969:
4968:
4961:
4957:
4952:
4948:
4947:
4940:
4936:
4931:
4927:
4926:
4919:
4915:
4910:
4906:
4905:
4898:
4894:
4889:
4885:
4884:
4877:
4873:
4868:
4864:
4863:
4856:
4852:
4847:
4843:
4842:
4835:
4831:
4826:
4822:
4821:
4814:
4810:
4805:
4798:
4796:
4794:
4792:
4791:
4787:
4782:
4781:
4774:
4770:
4765:
4761:
4760:
4753:
4749:
4744:
4741:
4737:
4736:
4731:
4730:
4723:
4719:
4714:
4710:
4709:
4702:
4698:
4693:
4689:
4688:
4681:
4677:
4672:
4668:
4667:
4660:
4656:
4651:
4647:
4646:
4639:
4635:
4630:
4626:
4625:
4618:
4614:
4609:
4605:
4604:
4597:
4593:
4588:
4584:
4583:
4576:
4572:
4567:
4563:
4562:
4555:
4551:
4546:
4542:
4541:
4534:
4530:
4525:
4521:
4520:
4513:
4509:
4504:
4500:
4499:
4492:
4488:
4483:
4479:
4478:
4471:
4467:
4462:
4458:
4457:
4450:
4446:
4441:
4437:
4436:
4429:
4425:
4420:
4416:
4415:
4408:
4404:
4399:
4392:
4388:
4387:
4380:
4376:
4371:
4367:
4366:
4359:
4355:
4350:
4347:
4343:
4342:
4337:
4336:
4329:
4325:
4320:
4316:
4315:
4308:
4304:
4299:
4295:
4294:
4287:
4283:
4278:
4274:
4273:
4266:
4262:
4257:
4253:
4252:
4245:
4241:
4236:
4232:
4231:
4224:
4220:
4215:
4211:
4210:
4203:
4199:
4194:
4190:
4189:
4182:
4178:
4173:
4169:
4168:
4161:
4157:
4152:
4148:
4147:
4140:
4136:
4131:
4127:
4126:
4119:
4115:
4110:
4106:
4105:
4098:
4094:
4089:
4085:
4084:
4077:
4073:
4068:
4064:
4063:
4056:
4052:
4047:
4043:
4042:
4035:
4031:
4026:
4022:
4021:
4014:
4010:
4005:
3998:
3994:
3993:
3986:
3982:
3977:
3973:
3972:
3965:
3961:
3956:
3953:
3949:
3948:
3943:
3942:
3935:
3931:
3926:
3922:
3921:
3914:
3910:
3905:
3901:
3900:
3893:
3889:
3884:
3880:
3879:
3872:
3868:
3863:
3859:
3858:
3851:
3847:
3842:
3838:
3837:
3830:
3826:
3821:
3817:
3816:
3809:
3805:
3800:
3796:
3795:
3788:
3784:
3779:
3775:
3774:
3767:
3763:
3758:
3754:
3753:
3746:
3742:
3737:
3733:
3732:
3725:
3721:
3716:
3712:
3711:
3704:
3700:
3695:
3691:
3690:
3683:
3679:
3674:
3670:
3669:
3662:
3658:
3653:
3649:
3648:
3641:
3637:
3632:
3628:
3627:
3620:
3616:
3611:
3609:
3605:
3604:
3597:
3593:
3588:
3584:
3583:
3576:
3572:
3567:
3564:
3560:
3559:
3554:
3553:
3546:
3542:
3537:
3533:
3532:
3525:
3521:
3516:
3512:
3511:
3504:
3500:
3495:
3491:
3490:
3483:
3479:
3474:
3470:
3469:
3462:
3458:
3453:
3449:
3448:
3441:
3437:
3432:
3428:
3427:
3420:
3416:
3411:
3407:
3406:
3399:
3395:
3390:
3386:
3385:
3378:
3374:
3369:
3365:
3364:
3357:
3353:
3348:
3344:
3343:
3336:
3332:
3327:
3323:
3322:
3315:
3311:
3306:
3302:
3301:
3294:
3290:
3285:
3281:
3280:
3273:
3269:
3264:
3260:
3259:
3252:
3248:
3243:
3239:
3238:
3231:
3227:
3222:
3220:
3216:
3215:
3208:
3204:
3199:
3195:
3194:
3187:
3183:
3178:
3175:
3171:
3170:
3165:
3164:
3157:
3153:
3148:
3144:
3143:
3136:
3132:
3127:
3123:
3122:
3115:
3111:
3106:
3102:
3101:
3094:
3090:
3085:
3081:
3080:
3073:
3069:
3064:
3060:
3059:
3052:
3048:
3043:
3037:
3036:
3029:
3025:
3020:
3016:
3015:
3008:
3004:
2999:
2996:
2992:
2991:
2986:
2985:
2978:
2974:
2969:
2965:
2964:
2957:
2953:
2948:
2944:
2943:
2936:
2932:
2927:
2923:
2922:
2915:
2911:
2906:
2902:
2901:
2894:
2890:
2885:
2881:
2880:
2873:
2869:
2864:
2858:
2857:
2850:
2846:
2841:
2837:
2836:
2829:
2825:
2820:
2817:
2813:
2812:
2807:
2806:
2799:
2795:
2790:
2784:
2783:
2776:
2772:
2767:
2764:
2760:
2759:
2755:
2752:
2749:
2746:
2744:
2742:
2740:
2738:
2736:
2734:
2732:
2730:
2728:
2726:
2724:
2722:
2720:
2718:earth metals
2715:
2710:
2707:
2703:
2702:
2699:
2696:
2694:
2691:
2689:
2686:
2684:
2681:
2679:
2676:
2674:
2671:
2669:
2666:
2664:
2661:
2659:
2656:
2654:
2651:
2649:
2646:
2644:
2641:
2639:
2636:
2634:
2631:
2629:
2626:
2624:
2621:
2618:
2616:
2613:
2611:
2608:
2605:
2601:
2600:
2595:
2591:
2587:
2580:
2575:
2573:
2568:
2566:
2561:
2560:
2557:
2549:
2548:
2547:Physics World
2542:
2536:
2535:
2531:
2522:
2518:
2514:
2510:
2506:
2502:
2498:
2494:
2493:
2485:
2482:
2477:
2473:
2469:
2465:
2461:
2457:
2456:
2448:
2446:
2442:
2437:
2433:
2428:
2423:
2419:
2415:
2411:
2407:
2403:
2396:
2393:
2389:
2374:
2370:
2363:
2356:
2353:
2348:
2344:
2339:
2334:
2330:
2326:
2321:
2316:
2313:(3): 032008.
2312:
2308:
2304:
2297:
2294:
2286:
2279:
2276:
2271:
2267:
2263:
2259:
2255:
2251:
2244:
2241:
2229:
2225:
2219:
2217:
2213:
2208:
2204:
2201:(3): 030001.
2200:
2196:
2189:
2182:
2180:
2178:
2176:
2174:
2170:
2165:
2161:
2158:(3): 030003.
2157:
2153:
2146:
2143:
2140:
2136:
2132:
2128:
2127:
2122:
2117:
2114:
2111:
2107:
2106:0-85404-438-8
2103:
2099:
2095:
2091:
2090:
2085:
2080:
2077:
2074:
2070:
2066:
2062:
2061:
2056:
2051:
2048:
2045:
2041:
2037:
2033:
2032:
2027:
2022:
2019:
2014:
2010:
2006:
2002:
1998:
1994:
1991:(8): 082501.
1990:
1986:
1985:
1977:
1975:
1971:
1966:
1962:
1958:
1954:
1950:
1946:
1942:
1938:
1937:
1929:
1926:
1921:
1917:
1913:
1909:
1904:
1899:
1895:
1891:
1888:(3): 030001.
1887:
1883:
1879:
1872:
1870:
1868:
1866:
1862:
1857:
1853:
1849:
1845:
1841:
1837:
1829:
1826:
1821:
1817:
1811:
1808:
1801:
1790:
1786:
1785:tropical year
1780:
1778:
1774:
1767:
1762:
1757:
1753:
1750:
1747:
1745:
1742:
1740:
1737:
1735:
1734:Hydrogen atom
1732:
1731:
1727:
1725:
1719:
1683:
1678:
1672:
1668:
1663:
1660:
1634:
1630:
1620:
1617:
1599:
1596:
1585:
1580:
1577:
1551:
1547:
1537:
1534:
1516:
1508:
1503:
1500:
1474:
1470:
1460:
1457:
1435:
1434:
1433:
1431:
1423:
1421:
1410:
1403:
1399:
1395:
1391:
1387:
1383:
1372:
1368:
1361:
1359:
1348:
1345:294(67)
1342:
1338:
1334:
1323:
1319:
1312:
1310:
1299:
1293:
1289:
1278:
1274:
1267:
1265:
1263:
1262:Grand Fenwick
1259:
1255:
1251:
1250:
1244:
1233:
1230:139(10)
1227:
1223:
1218:
1207:
1203:
1196:
1194:
1192:
1188:
1183:
1181:
1177:
1172:
1170:
1166:
1162:
1158:
1157:nuclear tests
1151:
1147:
1143:
1139:
1134:
1119:(atomic mass
1118:
1114:
1106:
1101:
1093:
1091:
1089:
1085:
1081:
1077:
1072:
1070:
1066:
1062:
1058:
1057:deuterium gas
1054:
1050:
1046:
1042:
1037:
1022:(atomic mass
1021:
1017:
1009:
1004:
996:
994:
984:
972:
968:
963:
961:
957:
953:
948:
933:(atomic mass
932:
926:
918:
913:
906:
897:
895:
893:
889:
885:
879:
876:
872:
866:
863:
860:
854:
851:
847:
841:
838:
834:
828:
825:
821:
815:
812:
806:
803:
797:
794:
790:
785:
782:
775:
772:
769:
768:
762:
759:
755:
749:
746:
735:
730:
729:
727:
722:
719:
717:
714:
711:
708:
703:
693:
690:
687:
684:
683:
679:
676:
675:
664:
661:
637:
634:
632:
629:
626:
623:
620:86(6) ys
618:
609:
606:
603:
600:
599:
596:
594:
591:
588:
586:
583:
580:
577:139(10)
575:
566:
563:
560:
557:
556:
552:
550:
547:
544:
542:
539:
537:
534:
529:
514:
511:
508:
505:
502:
501:
497:
492:
490:
472:
469:
466:
463:
460:
459:
455:
450:
448:
430:
427:
424:
421:
420:
416:
413:
412:
403:
397:
392:
386:
378:
370:
362:
357:
356:Isotopic mass
352:
351:
345:
344:
335:
332:
331:(10 second).
330:
322:
317:
313:
309:
305:
301:
300:
294:
290:
288:
284:
281:. H, with no
280:
276:
272:
268:
264:
259:
257:
249:
245:
237:
226:
221:
219:
214:
212:
207:
206:
203:
196:
185:
183:
182:
180:
177:
169:
165:
161:
154:
151:
148:
144:
137:
132:
128:
117:
113:
110:
98:
95:
94:product
92:
90:
87:
80:
75:
72:
70:
67:
65:
64:
61:
54:
50:
38:
34:
19:
5423:Categories:
5399:
5378:
5357:
5336:
5315:
5294:
5273:
5252:
5231:
5210:
5189:
5168:
5147:
5126:
5091:
5070:
5049:
5028:
5007:
4986:
4965:
4944:
4923:
4902:
4881:
4860:
4839:
4818:
4778:
4757:
4727:
4706:
4685:
4664:
4643:
4622:
4601:
4580:
4559:
4538:
4517:
4496:
4475:
4454:
4433:
4412:
4384:
4363:
4333:
4312:
4291:
4270:
4249:
4228:
4207:
4186:
4165:
4144:
4123:
4102:
4081:
4060:
4039:
4018:
3990:
3969:
3939:
3918:
3897:
3876:
3855:
3834:
3813:
3792:
3771:
3750:
3729:
3708:
3687:
3666:
3645:
3624:
3601:
3580:
3550:
3529:
3508:
3487:
3466:
3445:
3424:
3403:
3382:
3361:
3340:
3319:
3298:
3277:
3256:
3235:
3212:
3191:
3161:
3140:
3119:
3098:
3077:
3056:
3033:
3012:
2982:
2961:
2940:
2919:
2898:
2877:
2854:
2833:
2803:
2780:
2770:
2756:Noble gases
2711:Hydrogen and
2545:
2499:(9): 92501.
2496:
2490:
2484:
2459:
2453:
2409:
2405:
2395:
2387:
2380:. Retrieved
2373:the original
2368:
2355:
2310:
2306:
2296:
2278:
2253:
2249:
2243:
2231:. Retrieved
2227:
2198:
2194:
2155:
2151:
2145:
2124:
2116:
2087:
2079:
2058:
2050:
2029:
2021:
1988:
1982:
1940:
1934:
1928:
1885:
1881:
1839:
1828:
1810:
1718:yoctoseconds
1715:
1427:
1424:Decay chains
1380:) has one a
1366:
1365:
1317:
1316:
1272:
1271:
1257:
1253:
1247:
1245:
1201:
1200:
1184:
1173:
1161:fusion bombs
1116:
1112:
1111:
1073:
1019:
1015:
1014:
971:proton decay
964:
959:
930:
929:
878:
870:
865:
853:
844:Produced in
840:
832:
827:
820:proton decay
814:
805:
796:
788:
784:
761:
753:
748:
725:
540:
488:
446:
349:
342:
326:
315:
307:
297:
260:
234:
167:
141:12.32 y
78:
2462:: 920–924.
1371:atomic mass
1339:. It has a
1322:atomic mass
1296:86(6)
1277:atomic mass
1252:, the name
1206:atomic mass
1138:radioactive
1076:heavy water
789:Bold symbol
329:yoctosecond
256:zeptosecond
5455:Categories
2320:1812.05552
1802:References
1362:Hydrogen-7
1331:) has one
1313:Hydrogen-6
1268:Hydrogen-5
1197:Hydrogen-4
1142:β decaying
1131:(81)
1034:(15)
945:(14)
709:2n ?
677:3n ?
498:Deuterium
2036:deuterium
1965:122902571
1920:233794940
1912:1674-1137
1856:1365-3075
1722:10 s
1517:−
1418:10 s
1414:6.52(558)
1356:10 s
1341:half-life
1335:and five
1307:10 s
1292:half-life
1241:10 s
1226:half-life
1171:devices.
1167:, and in
1150:half-life
1053:Milky Way
1016:Deuterium
1003:Deuterium
831:This and
712:H ?
680:H ?
665:H ?
662:n ?
369:Half-life
304:deuterium
269:and H is
267:deuterium
248:half-life
173:°(H)
74:half-life
5466:Hydrogen
5425:Isotopes
5390:Isotopes
5369:Isotopes
5348:Isotopes
5327:Isotopes
5306:Isotopes
5285:Isotopes
5264:Isotopes
5243:Isotopes
5222:Isotopes
5201:Isotopes
5180:Isotopes
5159:Isotopes
5138:Isotopes
5117:Isotopes
5082:Isotopes
5061:Isotopes
5040:Isotopes
5019:Isotopes
4998:Isotopes
4977:Isotopes
4956:Isotopes
4935:Isotopes
4914:Isotopes
4893:Isotopes
4872:Isotopes
4851:Isotopes
4830:Isotopes
4809:Isotopes
4769:Isotopes
4748:Isotopes
4740:⑧
4718:Isotopes
4697:Isotopes
4676:Isotopes
4655:Isotopes
4634:Isotopes
4613:Isotopes
4592:Isotopes
4571:Isotopes
4550:Isotopes
4529:Isotopes
4508:Isotopes
4487:Isotopes
4466:Isotopes
4445:Isotopes
4424:Isotopes
4403:Isotopes
4375:Isotopes
4354:Isotopes
4346:⑦
4324:Isotopes
4303:Isotopes
4282:Isotopes
4261:Isotopes
4240:Isotopes
4219:Isotopes
4198:Isotopes
4177:Isotopes
4156:Isotopes
4135:Isotopes
4114:Isotopes
4093:Isotopes
4072:Isotopes
4051:Isotopes
4030:Isotopes
4009:Isotopes
3981:Isotopes
3960:Isotopes
3952:⑥
3930:Isotopes
3909:Isotopes
3888:Isotopes
3867:Isotopes
3846:Isotopes
3825:Isotopes
3804:Isotopes
3783:Isotopes
3762:Isotopes
3741:Isotopes
3720:Isotopes
3699:Isotopes
3678:Isotopes
3657:Isotopes
3636:Isotopes
3615:Isotopes
3592:Isotopes
3571:Isotopes
3563:⑤
3541:Isotopes
3520:Isotopes
3499:Isotopes
3478:Isotopes
3457:Isotopes
3436:Isotopes
3415:Isotopes
3394:Isotopes
3373:Isotopes
3352:Isotopes
3331:Isotopes
3310:Isotopes
3289:Isotopes
3268:Isotopes
3247:Isotopes
3226:Isotopes
3203:Isotopes
3182:Isotopes
3174:④
3152:Isotopes
3131:Isotopes
3110:Isotopes
3089:Isotopes
3068:Isotopes
3047:Isotopes
3024:Isotopes
3003:Isotopes
2995:③
2973:Isotopes
2952:Isotopes
2931:Isotopes
2910:Isotopes
2889:Isotopes
2868:Isotopes
2845:Isotopes
2824:Isotopes
2816:②
2794:Isotopes
2771:Isotopes
2763:①
2716:Alkaline
2586:Isotopes
2521:11531562
2436:32271921
2347:96457175
2086:(2005).
2013:12633420
1728:See also
1631:→
1548:→
1471:→
1402:helium-8
1398:hydrogen
1386:neutrons
1384:and six
1352:2.94(67)
1337:neutrons
1237:1.39(10)
1217:unstable
1146:helium-3
1045:Big Bang
1041:seawater
917:diproton
553:Tritium
456:Protium
383:Daughter
283:neutrons
252:12.32(2)
244:isotopes
236:Hydrogen
195:abridged
104:99.9855%
37:hydrogen
33:Isotopes
5392:
5371:
5350:
5329:
5308:
5287:
5266:
5245:
5224:
5203:
5182:
5161:
5140:
5119:
5100:
5084:
5063:
5042:
5021:
5000:
4979:
4958:
4937:
4916:
4895:
4874:
4853:
4832:
4811:
4771:
4750:
4720:
4699:
4678:
4657:
4636:
4615:
4594:
4573:
4552:
4531:
4510:
4489:
4468:
4447:
4426:
4405:
4377:
4356:
4326:
4305:
4284:
4263:
4242:
4221:
4200:
4179:
4158:
4137:
4116:
4095:
4074:
4053:
4032:
4011:
3983:
3962:
3932:
3911:
3890:
3869:
3848:
3827:
3806:
3785:
3764:
3743:
3722:
3701:
3680:
3659:
3638:
3617:
3594:
3573:
3543:
3522:
3501:
3480:
3459:
3438:
3417:
3396:
3375:
3354:
3333:
3312:
3291:
3270:
3249:
3228:
3205:
3184:
3154:
3133:
3112:
3091:
3070:
3049:
3026:
3005:
2975:
2954:
2933:
2912:
2891:
2870:
2847:
2826:
2796:
2773:
2619:
2588:of the
2501:Bibcode
2464:Bibcode
2427:7330459
2325:Bibcode
2258:Bibcode
2233:24 June
2131:protium
2065:tritium
1993:Bibcode
1945:Bibcode
1890:Bibcode
1822:. 2009.
1749:Muonium
1254:quadium
1113:Tritium
1100:Tritium
993:years.
960:protium
952:nucleus
822:occurs.
818:Unless
630:(1/2+)
385:isotope
337:Nuclide
312:tritium
271:tritium
263:element
193: (
125:stable
121:0.0145%
2706:Period
2519:
2434:
2424:
2382:5 June
2345:
2104:
2011:
1963:
1918:
1910:
1854:
1638:
1555:
1478:
1382:proton
1333:proton
1303:8.6(6)
1258:Q-bomb
1061:comets
956:proton
848:(BBN).
754:σ
715:1/2+#
548:Trace
489:Stable
447:Stable
396:parity
191:0.0002
187:1.0080
109:stable
39:
2604:Group
2376:(PDF)
2365:(PDF)
2343:S2CID
2315:arXiv
2288:(PDF)
2228:CIAAW
2191:(PDF)
2121:IUPAC
2098:IUPAC
2055:IUPAC
2026:IUPAC
1961:S2CID
1916:S2CID
1820:CIAAW
1768:Notes
1475:12.32
1400:with
1390:Riken
1378:(108)
1374:7.052
1325:6.044
1280:5.035
1209:4.026
1148:with
1144:into
1121:3.016
1024:2.014
935:1.007
699:(108)
695:7.052
649:6.044
611:5.035
568:4.026
545:1/2+
516:3.016
474:2.014
451:1/2+
432:1.007
409:Note
375:Decay
287:names
136:trace
60:Decay
5405:102
5384:101
5363:100
4784:120
4763:119
4733:118
4712:117
4691:116
4670:115
4649:114
4628:113
4607:112
4586:111
4565:110
4544:109
4523:108
4502:107
4481:106
4460:105
4439:104
4418:103
2517:PMID
2432:PMID
2384:2021
2235:2021
2102:ISBN
2009:PMID
1908:ISSN
1852:ISSN
1329:(27)
1284:(10)
1235:(or
1213:(11)
1047:and
977:and
733:view
668:2−#
653:(27)
615:(10)
572:(11)
526:(81)
506:(T)
484:(15)
464:(D)
442:(14)
391:Spin
377:mode
224:edit
217:talk
210:view
89:mode
5342:99
5321:98
5300:97
5279:96
5258:95
5237:94
5216:93
5195:92
5174:91
5153:90
5132:89
5097:70
5076:69
5055:68
5034:67
5013:66
4992:65
4971:64
4950:63
4929:62
4908:61
4887:60
4866:59
4845:58
4824:57
4780:Ubn
4759:Uue
4390:88
4369:87
4339:86
4318:85
4297:84
4276:83
4255:82
4234:81
4213:80
4192:79
4171:78
4150:77
4129:76
4108:75
4087:74
4066:73
4045:72
4024:71
3996:56
3975:55
3945:54
3924:53
3903:52
3882:51
3861:50
3840:49
3819:48
3798:47
3777:46
3756:45
3735:44
3714:43
3693:42
3672:41
3651:40
3630:39
3607:38
3586:37
3556:36
3535:35
3514:34
3493:33
3472:32
3451:31
3430:30
3409:29
3388:28
3367:27
3346:26
3325:25
3304:24
3283:23
3262:22
3241:21
3218:20
3197:19
3167:18
3146:17
3125:16
3104:15
3083:14
3062:13
3039:12
3018:11
2988:10
2509:doi
2472:doi
2460:610
2422:PMC
2414:doi
2410:150
2333:doi
2266:doi
2254:611
2203:doi
2160:doi
2135:doi
2133:".
2094:RSC
2069:doi
2067:".
2040:doi
2038:".
2001:doi
1953:doi
1898:doi
1844:doi
1552:139
1420:).
1392:'s
1358:).
1343:of
1294:of
1243:).
1228:of
1129:320
1126:281
1123:049
1065:Sun
1032:844
1029:777
1026:101
987:3.6
943:898
940:031
937:825
697:750
624:2n
592:2−
524:320
521:281
518:049
493:1+
482:844
479:777
476:101
440:898
437:031
434:825
393:and
250:of
82:1/2
35:of
5457::
5401:No
5380:Md
5359:Fm
5338:Es
5317:Cf
5296:Bk
5275:Cm
5254:Am
5233:Pu
5212:Np
5170:Pa
5149:Th
5128:Ac
5093:Yb
5072:Tm
5051:Er
5030:Ho
5009:Dy
4988:Tb
4967:Gd
4946:Eu
4925:Sm
4904:Pm
4883:Nd
4862:Pr
4841:Ce
4820:La
4729:Og
4708:Ts
4687:Lv
4666:Mc
4645:Fl
4624:Nh
4603:Cn
4582:Rg
4561:Ds
4540:Mt
4519:Hs
4498:Bh
4477:Sg
4456:Db
4435:Rf
4414:Lr
4386:Ra
4365:Fr
4335:Rn
4314:At
4293:Po
4272:Bi
4251:Pb
4230:Tl
4209:Hg
4188:Au
4167:Pt
4146:Ir
4125:Os
4104:Re
4062:Ta
4041:Hf
4020:Lu
3992:Ba
3971:Cs
3941:Xe
3899:Te
3878:Sb
3857:Sn
3836:In
3815:Cd
3794:Ag
3773:Pd
3752:Rh
3731:Ru
3710:Tc
3689:Mo
3668:Nb
3647:Zr
3603:Sr
3582:Rb
3552:Kr
3531:Br
3510:Se
3489:As
3468:Ge
3447:Ga
3426:Zn
3405:Cu
3384:Ni
3363:Co
3342:Fe
3321:Mn
3300:Cr
3258:Ti
3237:Sc
3214:Ca
3163:Ar
3142:Cl
3079:Si
3058:Al
3035:Mg
3014:Na
2984:Ne
2967:9
2946:8
2925:7
2904:6
2883:5
2860:4
2856:Be
2839:3
2835:Li
2809:2
2805:He
2786:1
2698:18
2693:17
2688:16
2683:15
2678:14
2673:13
2668:12
2663:11
2658:10
2544:.
2515:.
2507:.
2497:87
2495:.
2470:.
2458:.
2444:^
2430:.
2420:.
2408:.
2404:.
2386:.
2367:.
2341:.
2331:.
2323:.
2311:99
2309:.
2305:.
2264:.
2252:.
2226:.
2215:^
2199:45
2197:.
2193:.
2172:^
2156:45
2154:.
2123:,
2100:.
2057:,
2028:,
2007:.
1999:.
1989:90
1987:.
1973:^
1959:.
1951:.
1941:68
1939:.
1914:.
1906:.
1896:.
1886:45
1884:.
1880:.
1864:^
1850:.
1842:.
1838:.
1818:.
1776:^
1642:ys
1635:86
1559:ys
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1430:He
1409:ys
1376:75
1347:ys
1327:96
1298:ys
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1232:ys
1211:43
1189:.
1182:.
1140:,
1133:Da
1115:,
1090:.
1071:.
1036:Da
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991:10
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962:.
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891:^
871:He
833:He
770:n:
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691:6
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651:96
645:5
642:1
639:H
627:H
613:31
607:4
604:1
601:H
589:H
579:ys
570:43
564:3
561:1
558:H
541:He
512:2
509:1
470:1
467:1
428:0
425:1
422:H
361:Da
153:He
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4083:W
3920:I
3626:Y
3279:V
3193:K
3121:S
3100:P
2963:F
2942:O
2921:N
2900:C
2879:B
2782:H
2653:9
2648:8
2643:7
2638:6
2633:5
2628:4
2623:3
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2550:.
2523:.
2511::
2503::
2478:.
2474::
2466::
2438:.
2416::
2349:.
2335::
2327::
2317::
2272:.
2268::
2260::
2237:.
2209:.
2205::
2166:.
2162::
2137::
2096:–
2071::
2042::
2015:.
2003::
1995::
1967:.
1955::
1947::
1922:.
1900::
1892::
1858:.
1846::
1720:(
1689:n
1684:1
1679:0
1673:2
1669:+
1664:3
1661:1
1655:H
1621:5
1618:1
1612:H
1600:1
1597:0
1591:n
1586:+
1581:3
1578:1
1572:H
1538:4
1535:1
1529:H
1513:e
1509:+
1504:3
1501:2
1482:y
1461:3
1458:1
1452:H
1416:×
1412:(
1369:(
1367:H
1354:×
1350:(
1320:(
1318:H
1305:×
1301:(
1275:(
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1202:H
1117:H
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931:H
927:.
886:.
873:.
585:n
536:β
504:H
462:H
363:)
359:(
350:N
343:Z
316:A
314:(
308:A
306:(
299:A
240:1
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189:±
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