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Standard atomic weightAr°(V) | |||||||||||||||||||||||||||||||
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Naturally occurringvanadium (23V) is composed of one stableisotope51V and one radioactive isotope50V with ahalf-life of 2.71×1017 years. 24 artificialradioisotopes have been characterized (in the range ofmass number between 40 and 65) with the most stable being49V with a half-life of 330 days, and48V with a half-life of 15.9735 days. All of the remainingradioactive isotopes have half-lives shorter than an hour, the majority of them below 10 seconds, the least stable being42V with a half-life shorter than 55 nanoseconds, with all of the isotopes lighter than it, and none of the heavier, have unknown half-lives. In 4 isotopes,metastable excited states were found (including 2 metastable states for60V), which adds up to 5 meta states.
The primarydecay mode before the most abundant stable isotope51V iselectron capture. The next most common mode isbeta decay. The primarydecay products before51V are element 22 (titanium) isotopes and the primary products after are element 24 (chromium) isotopes.
Nuclide [n 1] | Z | N | Isotopic mass(Da)[3] [n 2][n 3] | Half-life[4] [n 4][n 5] | Decay mode[4] [n 6] | Daughter isotope [n 7] | Spin and parity[4] [n 8][n 5] | Natural abundance(mole fraction) | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Excitation energy[n 5] | Normal proportion[4] | Range of variation | |||||||||||||||||
43V | 23 | 20 | 42.980766(46) | 79.3(24) ms | β+ (>97.5%) | 43Ti | 7/2−# | ||||||||||||
β+,p (<2.5%) | 42Sc | ||||||||||||||||||
44V | 23 | 21 | 43.9744410(78) | 111(7) ms | β+ | 44Ti | (2)+ | ||||||||||||
β+,α (?%) | 40Ca | ||||||||||||||||||
44mV | 271(9) keV | 150(3) ms | β+ | 44Ti | (6)+ | ||||||||||||||
45V | 23 | 22 | 44.96576850(93) | 547(6) ms | β+ | 45Ti | 7/2− | ||||||||||||
45mV | 56.8(6) keV | 512(13) ns | IT | 45V | (3/2−) | ||||||||||||||
46V | 23 | 23 | 45.96019739(14) | 422.62(5) ms | β+ | 46Ti | 0+ | ||||||||||||
46mV | 801.46(10) keV | 1.02(7) ms | IT | 46V | 3+ | ||||||||||||||
47V | 23 | 24 | 46.95490356(12) | 32.6(3) min | β+ | 47Ti | 3/2− | ||||||||||||
48V | 23 | 25 | 47.9522509(10) | 15.9735(25) d | β+ | 48Ti | 4+ | ||||||||||||
49V | 23 | 26 | 48.94851051(88) | 330(15) d | EC | 49Ti | 7/2− | ||||||||||||
50V[n 9] | 23 | 27 | 49.947156681(99) | 2.71(13)×1017 y | β+[n 10] | 50Ti | 6+ | 0.00250(10) | |||||||||||
51V[n 11] | 23 | 28 | 50.94395766(10) | Stable | 7/2− | 0.99750(10) | |||||||||||||
52V | 23 | 29 | 51.94477364(17) | 3.743(5) min | β− | 52Cr | 3+ | ||||||||||||
53V | 23 | 30 | 52.9443349(33) | 1.543(14) min | β− | 53Cr | 7/2− | ||||||||||||
54V | 23 | 31 | 53.946432(12) | 49.8(5) s | β− | 54Cr | 3+ | ||||||||||||
54mV | 108.0(10) keV | 900(500) ns | IT | 54V | (5)+ | ||||||||||||||
55V | 23 | 32 | 54.947262(29) | 6.54(15) s | β− | 55Cr | 7/2−# | ||||||||||||
56V | 23 | 33 | 55.95042(19) | 216(4) ms | β− | 56Cr | (1+) | ||||||||||||
57V | 23 | 34 | 56.952297(91) | 350(10) ms | β− | 57Cr | (7/2−) | ||||||||||||
58V | 23 | 35 | 57.95660(10) | 191(10) ms | β− | 58Cr | (1+) | ||||||||||||
59V | 23 | 36 | 58.95962(15) | 95(6) ms | β− (<97%) | 59Cr | (5/2−) | ||||||||||||
β−, n (>3%) | 58Cr | ||||||||||||||||||
60V | 23 | 37 | 59.96448(20) | 122(18) ms | β− (>99.9%) | 60Cr | 3+# | ||||||||||||
60m1V[n 12] | 0(150)# keV | 40(15) ms | β− | 60Cr | 1+# | ||||||||||||||
60m2V | 203.7(7) keV | 230(24) ns | IT | 60V | (4+) | ||||||||||||||
61V | 23 | 38 | 60.96760(25) | 48.2(6) ms | β− (85.5%) | 61Cr | (3/2−) | ||||||||||||
β−,n (14.5%) | 60Cr | ||||||||||||||||||
62V | 23 | 39 | 61.97293(28) | 33.6(23) ms | β− | 62Cr | 3+# | ||||||||||||
63V | 23 | 40 | 62.97666(37) | 19.6(9) ms | β− (<65%) | 63Cr | (3/2−,5/2−) | ||||||||||||
β−, n (>35%) | 62Cr | ||||||||||||||||||
64V | 23 | 41 | 63.98248(43)# | 15(2) ms | β− | 64Cr | (1,2) | ||||||||||||
64mV | 81.0(7) keV | <1 μs | IT | 64V | |||||||||||||||
65V | 23 | 42 | 64.98700(54)# | 14# ms [>620 ns] | 5/2−# | ||||||||||||||
66V | 23 | 43 | 65.99324(54)# | 10# ms [>620 ns] | |||||||||||||||
67V | 23 | 44 | 66.99813(64)# | 8# ms [>620 ns] | 5/2−# | ||||||||||||||
This table header & footer: |
EC: | Electron capture |
IT: | Isomeric transition |
p: | Proton emission |
Daughter products other than vanadium