Niobium-83

Properties and data of the isotope ⁸³Nb.

Contents

See also: List of individual Niobium isotopes (and general data sources).

General data

Name of the isotope:Niobium-83; Nb-83Symbol:⁸³Nb or 8341NbMass number A:83 (= number of nucleons)Atomic number Z:41 (= number of protons)Neutrons N:42Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.0243902439024 (= neutron-proton ratio)Neutron excess (N-Z):1Isotopic mass:82.93821(16) u (atomic weight of Niobium-83)Nuclide mass:82.9157192 u (calculated nuclear mass without electrons)Mass excess:-57.55701 MeVMass defect:0.74654278400001 u (per nucleus)Nuclear binding energy:695.40012404 MeV (per nucleus)
8.37831475 MeV (average binding energy per nucleon)Separation energy:S_N = 13.54(34) MeV (first neutron)
S_P = 1.21(15) MeV (first proton)Half-life:3.9(2) sDecay constant λ:0.17773004629742 s^-1Specific activity α:1.305262651031 × 10⁺²¹ Bq g^-1
35277368946.808 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2+)Mirror nucleus:Molybdenum-83Year of discovery:1988

Radioactive Decay

Half-life T_½ = 3.9(2) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	⁸³Zr	100 %	8.36(15) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 42) and isobaric (same nucleon number A = 83) with Niobium-83. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 42	Isobar A = 83
21	⁶³Sc
22	⁶⁴Ti
23	⁶⁵V
24	⁶⁶Cr
25	⁶⁷Mn
26	⁶⁸Fe
27	⁶⁹Co
28	⁷⁰Ni
29	⁷¹Cu
30	⁷²Zn	⁸³Zn
31	⁷³Ga	⁸³Ga
32	⁷⁴Ge	⁸³Ge
33	⁷⁵As	⁸³As
34	⁷⁶Se	⁸³Se
35	⁷⁷Br	⁸³Br
36	⁷⁸Kr	⁸³Kr
37	⁷⁹Rb	⁸³Rb
38	⁸⁰Sr	⁸³Sr
39	⁸¹Y	⁸³Y
40	⁸²Zr	⁸³Zr
41	⁸³Nb	⁸³Nb
42	⁸⁴Mo	⁸³Mo
43	⁸⁵Tc
44	⁸⁶Ru