Silver-102m

Properties and data of the isotope ¹⁰²Ag.

Content

General data

Name of the isotope:Silver-102m; Ag-102mSymbol:¹⁰²Ag or 10247AgMass number A:102 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:55Isotopic mass:101.911705(9) u (atomic weight of Silver-102m)
Excitation energy: 9.40(7) keVNuclide mass:101.8859231 u (calculated nuclear mass without electrons)Mass excess:-82.24626 MeVMass defect:0.93264188400001 u (per nucleus)Nuclear binding energy:868.75031909 MeV (per nucleus)
8.51715999 MeV (average binding energy per nucleon)Half-life:7.7(5) minDecay constant λ:0.0015003185726406 s^-1Specific activity α:8.945673048733 × 10⁺¹⁸ Bq g^-1
241774947.26306 Ci g^-1Spin and parity:
(nuclear angular momentum)2+Magnetic dipole moment:μ(μ_N) = + 4.1(3)Nuclear g-factor:g_l = 2.05

Radioactive Decay

Half-life T_½ = 7.7(5) min (minutes) respectively 4.62 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁰²Pd	51(5) %
Iso	¹⁰²Ag	49(5) %

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
¹⁰²Ag		12.9(3) min	5(+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 55) and isobaric (same nucleon number A = 102) with Silver-102m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 55	Isobar A = 102
30	⁸⁵Zn
31	⁸⁶Ga
32	⁸⁷Ge
33	⁸⁸As
34	⁸⁹Se
35	⁹⁰Br
36	⁹¹Kr
37	⁹²Rb	¹⁰²Rb
38	⁹³Sr	¹⁰²Sr
39	⁹⁴Y	¹⁰²Y
40	⁹⁵Zr	¹⁰²Zr
41	⁹⁶Nb	¹⁰²Nb
42	⁹⁷Mo	¹⁰²Mo
43	⁹⁸Tc	¹⁰²Tc
44	⁹⁹Ru	¹⁰²Ru
45	¹⁰⁰Rh	¹⁰²Rh
46	¹⁰¹Pd	¹⁰²Pd
47	¹⁰²Ag	¹⁰²Ag
48	¹⁰³Cd	¹⁰²Cd
49	¹⁰⁴In	¹⁰²In
50	¹⁰⁵Sn	¹⁰²Sn
51	¹⁰⁶Sb
52	¹⁰⁷Te
53	¹⁰⁸I
54	¹⁰⁹Xe