Molybdenum-105

Properties and data of the isotope ¹⁰⁵Mo.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Molybdenum-105; Mo-105Symbol:¹⁰⁵Mo or 10542MoMass number A:105 (= number of nucleons)Atomic number Z:42 (= number of protons)Neutrons N:63Isotopic mass:104.916975(10) u (atomic weight of Molybdenum-105)Nuclide mass:104.8939357 u (calculated nuclear mass without electrons)Mass excess:-77.33729 MeVMass defect:0.95756605200002 u (per nucleus)Nuclear binding energy:891.96703204 MeV (per nucleus)
8.49492411 MeV (average binding energy per nucleon)Separation energy:S_N = 5.058(13) MeV (first neutron)
S_P = 12.807(9) MeV (first proton)Half-life:35.6(16) sDecay constant λ:0.019470426420223 s^-1Specific activity α:1.127438947169 × 10⁺²⁰ Bq g^-1
3047132289.647 Ci g^-1Spin and parity:
(nuclear angular momentum)(5/2-)Magnetic dipole moment:μ(μ_N) = -0.55(2)Nuclear g-factor:g_l = -0.22Charge radius:4.5389(57) femtometer fmYear of discovery:1962

Radioactive Decay

Half-life T_½ = 35.6(16) s respectively 3.56 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁰⁵Tc	100 %	4.95(4) MeV

Parent Nuclides

Direct parent isotope is: ¹⁰⁵Nb.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 63) and isobaric (same nucleon number A = 105) with Molybdenum-105. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 63	Isobar A = 105
35	⁹⁸Br
36	⁹⁹Kr
37	¹⁰⁰Rb
38	¹⁰¹Sr	¹⁰⁵Sr
39	¹⁰²Y	¹⁰⁵Y
40	¹⁰³Zr	¹⁰⁵Zr
41	¹⁰⁴Nb	¹⁰⁵Nb
42	¹⁰⁵Mo	¹⁰⁵Mo
43	¹⁰⁶Tc	¹⁰⁵Tc
44	¹⁰⁷Ru	¹⁰⁵Ru
45	¹⁰⁸Rh	¹⁰⁵Rh
46	¹⁰⁹Pd	¹⁰⁵Pd
47	¹¹⁰Ag	¹⁰⁵Ag
48	¹¹¹Cd	¹⁰⁵Cd
49	¹¹²In	¹⁰⁵In
50	¹¹³Sn	¹⁰⁵Sn
51	¹¹⁴Sb	¹⁰⁵Sb
52	¹¹⁵Te	¹⁰⁵Te
53	¹¹⁶I
54	¹¹⁷Xe
55	¹¹⁸Cs
56	¹¹⁹Ba
57	¹²⁰La
58	¹²¹Ce
59	¹²²Pr