Vanadium-57

Properties and data of the isotope ⁵⁷V.

Contents

General data

Name of the isotope:Vanadium-57; V-57Symbol:⁵⁷V or 5723VMass number A:57 (= number of nucleons)Atomic number Z:23 (= number of protons)Neutrons N:34Isotopic mass:56.95232(9) u (atomic weight of Vanadium-57)Nuclide mass:56.9397029 u (calculated nuclear mass without electrons)Mass excess:-44.41363 MeVMass defect:0.52226288 u (per nucleus)Nuclear binding energy:486.48473914 MeV (per nucleus)
8.53481998 MeV (average binding energy per nucleon)Separation energy:S_N = 6.33(19) MeV (first neutron)
S_P = 12.38(15) MeV (first proton)Half-life:0.32(3) sDecay constant λ:2.1660849392498 s^-1Specific activity α:2.329369396205 × 10⁺²² Bq g^-1
629559296271.73 Ci g^-1Spin and parity:
(nuclear angular momentum)(7/2-)Year of discovery:1980

Radioactive Decay

Half-life T_½ = 0.32(3) s respectively 3.2 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁵⁷Cr	100 %	8.11(8) MeV
β^-, n	⁵⁶Cr	?	2.80(8) MeV

Parent Nuclides

Direct parent isotope is: ⁵⁷Ti.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 34) and isobaric (same nucleon number A = 57) with Vanadium-57. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 34	Isobar A = 57
17	⁵¹Cl
18	⁵²Ar
19	⁵³K
20	⁵⁴Ca	⁵⁷Ca
21	⁵⁵Sc	⁵⁷Sc
22	⁵⁶Ti	⁵⁷Ti
23	⁵⁷V	⁵⁷V
24	⁵⁸Cr	⁵⁷Cr
25	⁵⁹Mn	⁵⁷Mn
26	⁶⁰Fe	⁵⁷Fe
27	⁶¹Co	⁵⁷Co
28	⁶²Ni	⁵⁷Ni
29	⁶³Cu	⁵⁷Cu
30	⁶⁴Zn	⁵⁷Zn
31	⁶⁵Ga
32	⁶⁶Ge
33	⁶⁷As
34	⁶⁸Se
35	⁶⁹Br
36	⁷⁰Kr
37	⁷¹Rb