See also: List of individual Vanadium isotopes (and general data sources).
General data
Name of the isotope:Vanadium-55; V-55Symbol:55V or 5523VMass number A:55 (= number of nucleons)Atomic number Z:23 (= number of protons)Neutrons N:32Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.3913043478261 (= neutron-proton ratio)Neutron excess (N-Z):9Isotopic mass:54.94724(10) u (atomic weight of Vanadium-55)Nuclide mass:54.9346229 u (calculated nuclear mass without electrons)Mass excess:-49.14562 MeVMass defect:0.510013048 u (per nucleus)Nuclear binding energy:475.07409413 MeV (per nucleus) 8.6377108 MeV (average binding energy per nucleon)Separation energy:SN = 7.32(10) MeV (first neutron) SP = 10.81(13) MeV (first proton)Half-life:6.54(15) sDecay constant λ:0.10598580742507 s-1Specific activity α:1.161589646497 × 10+21 Bq g-1 31394314770.197 Ci g-1Spin and parity: (nuclear angular momentum)(7/2-)Year of discovery:1977
The following table shows the atomic nuclei that are isotonic (same neutron number N = 32) and isobaric (same nucleon number A = 55) with Vanadium-55. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
