Isotopes of vanadium

Most stable isotopes of vanadium

iso NA half-life DM DE (MeV) DP 48V syn 16 d β+ 4.0123 48Ti 49V syn 330 d ε 0.6019 49Ti 50V 0.25% 1.5×1017 y ε 2.2083 50Ti β− 1.0369 50Cr 51V 99.75% is stable with 28 neutrons
Standard atomic weight (Ar)	50.9415(1)

Naturally occurring vanadium (₂₃V) 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, the least stable being ⁴²V 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 for ⁶⁰V), which adds up to 5 meta states.

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.

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