Vanadium-50

Properties and data of the isotope ⁵⁰V.

Contents

General data

Name of the isotope:Vanadium-50; V-50Symbol:⁵⁰V or 5023VMass number A:50 (= number of nucleons)Atomic number Z:23 (= number of protons)Neutrons N:27Isotopic mass:49.947156(6) u (atomic weight of Vanadium-50)Nuclide mass:49.9345389 u (calculated nuclear mass without electrons)Mass excess:-49.22387 MeVMass defect:0.466772468 u (per nucleus)Nuclear binding energy:434.79575331 MeV (per nucleus)
8.69591507 MeV (average binding energy per nucleon)Separation energy:S_N = 9.3334(9) MeV (first neutron)
S_P = 7.9492(4) MeV (first proton)Half-life:2.65 × 10¹⁷ aDecay constant λ:8.294170909316 × 10^-26 s^-1Specific activity α:0.0010193605210672 Bq g^-1
2.755028435316 × 10^-14 Ci g^-1Spin and parity:
(nuclear angular momentum)6+Magnetic dipole moment:μ(μ_N) = +3.3442(4)Mirror nucleus:Cobalt-50Year of discovery:1949

Radioactive Decay

Half-life T_½ = 2.65 × 10¹⁷ a respectively 8.357040 × 10²⁴ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β⁺	⁵⁰Ti	99.3(7) %	2.2076(4) MeV
β^-	⁵⁰Cr	0.7(7) %	10.381(3) MeV

Occurrence

Comparison of the natural Vanadium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Vanadium Isotopic mixture	50.9415 u	100 %
Isotope ⁵⁰V	49.947156(6) u	0.0250(10) %	2.65 × 10¹⁷ a	6+
Isotope ⁵¹V	50.943957(6) u	99.750(10) %	stable	7/2-

NMR data

Nuclear magnetic properties of the NMR active Nuclide ⁵⁰V

Isotope:⁵⁰V-NMRQuantity:0.0250(10) %Spin:6+Nuclearmagnetic moment
μ/μ_N:+3.3442(4)Gyromagnetic ratio γ:2.6717 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = 0.55736666666667Quadrupole moment Q:+ 0.210(4) barn (100 fm²)Resonance frequency:v₀ = 4.2505 at 1 TRelative Sensitivity:0.05571 (H₀ = const.)
5.5905 (v₀ = const.)
[related to ¹H = 1.000]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 27) and isobaric (same nucleon number A = 50) with Vanadium-50. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 27	Isobar A = 50
11	³⁸Na
12	³⁹Mg
13	⁴⁰Al
14	⁴¹Si
15	⁴²P
16	⁴³S
17	⁴⁴Cl	⁵⁰Cl
18	⁴⁵Ar	⁵⁰Ar
19	⁴⁶K	⁵⁰K
20	⁴⁷Ca	⁵⁰Ca
21	⁴⁸Sc	⁵⁰Sc
22	⁴⁹Ti	⁵⁰Ti
23	⁵⁰V	⁵⁰V
24	⁵¹Cr	⁵⁰Cr
25	⁵²Mn	⁵⁰Mn
26	⁵³Fe	⁵⁰Fe
27	⁵⁴Co	⁵⁰Co
28	⁵⁵Ni	⁵⁰Ni
29	⁵⁶Cu
30	⁵⁷Zn
31	⁵⁸Ga
32	⁵⁹Ge