Silver-113m

Properties and data of the isotope ¹¹³Ag.

Content

General data

Name of the isotope:Silver-113m; Ag-113mSymbol:¹¹³Ag or 11347AgMass number A:113 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:66Isotopic mass:112.906573(18) u (atomic weight of Silver-113m)
Excitation energy: 43.5(1) keVNuclide mass:112.8807911 u (calculated nuclear mass without electrons)Mass excess:-87.02669 MeVMass defect:1.03308796 u (per nucleus)Nuclear binding energy:962.31523621 MeV (per nucleus)
8.51606404 MeV (average binding energy per nucleon)Half-life:68.7(16) sDecay constant λ:0.010089478610771 s^-1Specific activity α:5.425023339051 × 10⁺¹⁹ Bq g^-1
1466222524.0681 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2+

Radioactive Decay

Half-life T_½ = 68.7(16) s respectively 6.87 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹¹³Cd	36(7) %
Iso	¹¹³Ag	64(7) %

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
¹¹³Ag		5.37(5) h	1/2-

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 66) and isobaric (same nucleon number A = 113) with Silver-113m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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