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Isotopes of vanadium



Naturally occurring Vanadium (V) is composed of one stable isotope 51V and one radioactive isotope 50V with a half-life of 1.5×1017 years. 24 artificial radioisotopes have been characterized (in the range of mass number between 40 and 65) with the most stable being 49V with a half-life of 330 days, and 48V with a half-life of 15.9735 days. All of the remaining radioactive isotopes have half-lives shorter than an hour, the majority of them below 10 seconds. In 4 isotopes, metastable excited states were found (including 2 metastable states for 60V).

Additional recommended knowledge

The primary decay mode before the most abundant stable isotope 51V is electron capture. The next most common mode is beta decay. The primary decay products before 51V are element 22 (titanium) isotopes and the primary products after are element 24 (chromium) isotopes.
Standard atomic mass: 50.9415(1) u

Table

nuclide
symbol
Z(p) N(n)  
isotopic mass (u)
 
half-life nuclear
spin
representative
isotopic
composition
(mole fraction)
range of natural
variation
(mole fraction)
excitation energy
40V 23 17 40.01109(54)# 2-#
41V 23 18 40.99978(22)# 7/2-#
42V 23 19 41.99123(21)# <55 ns 2-#
43V 23 20 42.98065(25)# 80# ms 7/2-#
44V 23 21 43.97411(13) 111(7) ms (2+)
44mV 270(100)# keV 150(3) ms (6+)
45V 23 22 44.965776(18) 547(6) ms 7/2-
46V 23 23 45.9602005(11) 422.50(11) ms 0+
46mV 801.46(10) keV 1.02(7) ms 3+
47V 23 24 46.9549089(9) 32.6(3) min 3/2-
48V 23 25 47.9522537(27) 15.9735(25) d 4+
49V 23 26 48.9485161(12) 329(3) d 7/2-
50V 23 27 49.9471585(11) 1.4(4)×1017 a 6+ 0.00250(4) 0.002487-0.002502
51V 23 28 50.9439595(11) STABLE 7/2- 0.99750(4) 0.997498-0.997513
52V 23 29 51.9447755(11) 3.743(5) min 3+
53V 23 30 52.944338(3) 1.60(4) min 7/2-
54V 23 31 53.946440(16) 49.8(5) s 3+
54mV 108(3) keV 900(500) ns (5+)
55V 23 32 54.94723(11) 6.54(15) s (7/2-)#
56V 23 33 55.95053(22) 216(4) ms (1+)
57V 23 34 56.95256(25) 0.35(1) s (3/2-)
58V 23 35 57.95683(27) 191(8) ms 3+#
59V 23 36 58.96021(33) 75(7) ms 7/2-#
60V 23 37 59.96503(51) 122(18) ms 3+#
60m1V 0(150)# keV 40(15) ms 1+#
60m2V 101(1) keV >400 ns
61V 23 38 60.96848(43)# 47.0(12) ms 7/2-#
62V 23 39 61.97378(54)# 33.5(20) ms 3+#
63V 23 40 62.97755(64)# 17(3) ms (7/2-)#
64V 23 41 63.98347(75)# 10# ms [>300 ns]
65V 23 42 64.98792(86)# 10# ms 5/2-#

Notes

  • Geologically exceptional samples are known in which the isotopic composition lies outside the reported range. The uncertainty in the atomic mass may exceed the stated value for such specimens.
  • Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
  • Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

References

  • Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
  • Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
  • Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
    • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
    • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
    • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.


Isotopes of titanium Isotopes of vanadium Isotopes of chromium
Index to isotope pages
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isotopes_of_vanadium". A list of authors is available in Wikipedia.
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