Niobium-107

Properties and data of the isotope ¹⁰⁷Nb.

Contents

General data

Name of the isotope:Niobium-107; Nb-107Symbol:¹⁰⁷Nb or 10741NbMass number A:107 (= number of nucleons)Atomic number Z:41 (= number of protons)Neutrons N:66Isotopic mass:106.931590(9) u (atomic weight of Niobium-107)Nuclide mass:106.9090992 u (calculated nuclear mass without electrons)Mass excess:-63.7235 MeVMass defect:0.961120768 u (per nucleus)Nuclear binding energy:895.27822867 MeV (per nucleus)
8.36708625 MeV (average binding energy per nucleon)Separation energy:S_N = 5.592(9) MeV (first neutron)
S_P = 12.46(43) MeV (first proton)Half-life:300(9) msDecay constant λ:2.3104906018665 s^-1Specific activity α:1.312650930188 × 10⁺²² Bq g^-1
354770521672.62 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:1992

Radioactive Decay

Half-life T_½ = 300(9) ms respectively 3.0 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁰⁷Mo	100 %	8.828(12) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 66) and isobaric (same nucleon number A = 107) with Niobium-107. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 66	Isobar A = 107
37	¹⁰³Rb
38	¹⁰⁴Sr	¹⁰⁷Sr
39	¹⁰⁵Y	¹⁰⁷Y
40	¹⁰⁶Zr	¹⁰⁷Zr
41	¹⁰⁷Nb	¹⁰⁷Nb
42	¹⁰⁸Mo	¹⁰⁷Mo
43	¹⁰⁹Tc	¹⁰⁷Tc
44	¹¹⁰Ru	¹⁰⁷Ru
45	¹¹¹Rh	¹⁰⁷Rh
46	¹¹²Pd	¹⁰⁷Pd
47	¹¹³Ag	¹⁰⁷Ag
48	¹¹⁴Cd	¹⁰⁷Cd
49	¹¹⁵In	¹⁰⁷In
50	¹¹⁶Sn	¹⁰⁷Sn
51	¹¹⁷Sb	¹⁰⁷Sb
52	¹¹⁸Te	¹⁰⁷Te
53	¹¹⁹I
54	¹²⁰Xe
55	¹²¹Cs
56	¹²²Ba
57	¹²³La
58	¹²⁴Ce
59	¹²⁵Pr
60	¹²⁶Nd
61	¹²⁷Pm
62	¹²⁸Sm