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Isotopes of vanadium

From Wikipedia, the free encyclopedia

Isotopes ofvanadium (23V)
Main isotopesDecay
abun­dancehalf-life(t1/2)modepro­duct
48Vsynth16 dβ+48Ti
49Vsynth330 dε49Ti
50V0.25%2.71×1017 yβ+50Ti
51V99.8%stable
Standard atomic weightAr°(V)

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.

List of isotopes

[edit]


Nuclide
[n 1]
ZNIsotopic 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
43V232042.980766(46)79.3(24) msβ+ (>97.5%)43Ti7/2−#
β+,p (<2.5%)42Sc
44V232143.9744410(78)111(7) msβ+44Ti(2)+
β+,α (?%)40Ca
44mV271(9) keV150(3) msβ+44Ti(6)+
45V232244.96576850(93)547(6) msβ+45Ti7/2−
45mV56.8(6) keV512(13) nsIT45V(3/2−)
46V232345.96019739(14)422.62(5) msβ+46Ti0+
46mV801.46(10) keV1.02(7) msIT46V3+
47V232446.95490356(12)32.6(3) minβ+47Ti3/2−
48V232547.9522509(10)15.9735(25) dβ+48Ti4+
49V232648.94851051(88)330(15) dEC49Ti7/2−
50V[n 9]232749.947156681(99)2.71(13)×1017 yβ+[n 10]50Ti6+0.00250(10)
51V[n 11]232850.94395766(10)Stable7/2−0.99750(10)
52V232951.94477364(17)3.743(5) minβ52Cr3+
53V233052.9443349(33)1.543(14) minβ53Cr7/2−
54V233153.946432(12)49.8(5) sβ54Cr3+
54mV108.0(10) keV900(500) nsIT54V(5)+
55V233254.947262(29)6.54(15) sβ55Cr7/2−#
56V233355.95042(19)216(4) msβ56Cr(1+)
57V233456.952297(91)350(10) msβ57Cr(7/2−)
58V233557.95660(10)191(10) msβ58Cr(1+)
59V233658.95962(15)95(6) msβ (<97%)59Cr(5/2−)
β, n (>3%)58Cr
60V233759.96448(20)122(18) msβ (>99.9%)60Cr3+#
60m1V[n 12]0(150)# keV40(15) msβ60Cr1+#
60m2V203.7(7) keV230(24) nsIT60V(4+)
61V233860.96760(25)48.2(6) msβ (85.5%)61Cr(3/2−)
β,n (14.5%)60Cr
62V233961.97293(28)33.6(23) msβ62Cr3+#
63V234062.97666(37)19.6(9) msβ (<65%)63Cr(3/2−,5/2−)
β, n (>35%)62Cr
64V234163.98248(43)#15(2) msβ64Cr(1,2)
64mV81.0(7) keV<1 μsIT64V
65V234264.98700(54)#14# ms
[>620 ns]
5/2−#
66V234365.99324(54)#10# ms
[>620 ns]
67V234466.99813(64)#8# ms
[>620 ns]
5/2−#
This table header & footer:
  1. ^mV – Excitednuclear isomer.
  2. ^( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
  3. ^# – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
  4. ^Bold half-life – nearly stable, half-life longer thanage of universe.
  5. ^abc# – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
  6. ^Modes of decay:
    EC:Electron capture


    IT:Isomeric transition


    p:Proton emission
  7. ^Bold symbol as daughter – Daughter product is stable.
  8. ^( ) spin value – Indicates spin with weak assignment arguments.
  9. ^Primordialradionuclide
  10. ^Theoretically capable of β decay to50Cr; the most recent measurement suggests a branching ratio of 0.7%.[5]
  11. ^See alsoVanadium-51 nuclear magnetic resonance
  12. ^Order of ground state and isomer is uncertain.

See also

[edit]

Daughter products other than vanadium

References

[edit]
  1. ^"Standard Atomic Weights: Vanadium".CIAAW. 1977.
  2. ^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)."Standard atomic weights of the elements 2021 (IUPAC Technical Report)".Pure and Applied Chemistry.doi:10.1515/pac-2019-0603.ISSN 1365-3075.
  3. ^Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*".Chinese Physics C.45 (3): 030003.doi:10.1088/1674-1137/abddaf.
  4. ^abcdKondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021)."The NUBASE2020 evaluation of nuclear properties"(PDF).Chinese Physics C.45 (3): 030001.doi:10.1088/1674-1137/abddae.
  5. ^Laubenstein, M.; Lehnert, B.; Nagorny, S. S.; Nisi, S.; Zuber, K. (5 April 2019). "New investigation of half-lives for the decay modes of50V".Physical Review C.99: 045501.arXiv:1812.04745.doi:10.1103/PhysRevC.99.045501.


Group12 3456789101112131415161718
PeriodHydrogen and
alkali metals
Alkaline
earth metals
Pnicto­gensChal­co­gensHalo­gensNoble gases
12
345678910
1112131415161718
192021222324252627282930313233343536
373839404142434445464748495051525354
55561 asterisk71727374757677787980818283848586
87881 asterisk103104105106107108109110111112113114115116117118
119120
1 asterisk5758596061626364656667686970 
1 asterisk8990919293949596979899100101102
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