Silver-101m

Properties and data of the isotope ¹⁰¹Ag.

Content

General data

Name of the isotope:Silver-101m; Ag-101mSymbol:¹⁰¹Ag or 10147AgMass number A:101 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:54Isotopic mass:100.912684(5) u (atomic weight of Silver-101m)
Excitation energy: 274.1(3) keVNuclide mass:100.8869021 u (calculated nuclear mass without electrons)Mass excess:-81.33433 MeVMass defect:0.922997968 u (per nucleus)Nuclear binding energy:859.7670692 MeV (per nucleus)
8.51254524 MeV (average binding energy per nucleon)Half-life:3.10(10) sDecay constant λ:0.22359586469676 s^-1Specific activity α:1.346525792903 × 10⁺²¹ Bq g^-1
36392588997.384 Ci g^-1Spin and parity:
(nuclear angular momentum)(1/2)-

Radioactive Decay

Half-life T_½ = 3.10(10) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	¹⁰¹Ag	100 %

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
¹⁰¹Ag		11.1(3) min	9/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 54) and isobaric (same nucleon number A = 101) with Silver-101m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 54	Isobar A = 101
30	⁸⁴Zn
31	⁸⁵Ga
32	⁸⁶Ge
33	⁸⁷As
34	⁸⁸Se
35	⁸⁹Br
36	⁹⁰Kr	¹⁰¹Kr
37	⁹¹Rb	¹⁰¹Rb
38	⁹²Sr	¹⁰¹Sr
39	⁹³Y	¹⁰¹Y
40	⁹⁴Zr	¹⁰¹Zr
41	⁹⁵Nb	¹⁰¹Nb
42	⁹⁶Mo	¹⁰¹Mo
43	⁹⁷Tc	¹⁰¹Tc
44	⁹⁸Ru	¹⁰¹Ru
45	⁹⁹Rh	¹⁰¹Rh
46	¹⁰⁰Pd	¹⁰¹Pd
47	¹⁰¹Ag	¹⁰¹Ag
48	¹⁰²Cd	¹⁰¹Cd
49	¹⁰³In	¹⁰¹In
50	¹⁰⁴Sn	¹⁰¹Sn
51	¹⁰⁵Sb
52	¹⁰⁶Te