Silver-116m1

Properties and data of the isotope ¹¹⁶Ag.

Content

General data

Name of the isotope:Silver-116m1; Ag-116m1Symbol:¹¹⁶Ag or 11647AgMass number A:116 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:69Isotopic mass:115.911387(3) u (atomic weight of Silver-116m1)
Excitation energy: 47.90(10) keVNuclide mass:115.8856051 u (calculated nuclear mass without electrons)Mass excess:-82.54248 MeVMass defect:1.054268708 u (per nucleus)Nuclear binding energy:982.04497589 MeV (per nucleus)
8.46590496 MeV (average binding energy per nucleon)Half-life:20(1) sDecay constant λ:0.034657359027997 s^-1Specific activity α:1.814882590434 × 10⁺²⁰ Bq g^-1
4905088082.2562 Ci g^-1Spin and parity:
(nuclear angular momentum)(3+)

Radioactive Decay

Half-life T_½ = 20(1) s respectively 2.0 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹¹⁶Cd	93.0 %
Iso	¹¹⁶Ag	7.0 %

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
¹¹⁶Ag		230(5) s	(0-)
^116m2Ag	129.80(22) keV	9.3(3) s	(6-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 69) and isobaric (same nucleon number A = 116) with Silver-116m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 69	Isobar A = 116
38	¹⁰⁷Sr
39	¹⁰⁸Y
40	¹⁰⁹Zr
41	¹¹⁰Nb
42	¹¹¹Mo	¹¹⁶Mo
43	¹¹²Tc	¹¹⁶Tc
44	¹¹³Ru	¹¹⁶Ru
45	¹¹⁴Rh	¹¹⁶Rh
46	¹¹⁵Pd	¹¹⁶Pd
47	¹¹⁶Ag	¹¹⁶Ag
48	¹¹⁷Cd	¹¹⁶Cd
49	¹¹⁸In	¹¹⁶In
50	¹¹⁹Sn	¹¹⁶Sn
51	¹²⁰Sb	¹¹⁶Sb
52	¹²¹Te	¹¹⁶Te
53	¹²²I	¹¹⁶I
54	¹²³Xe	¹¹⁶Xe
55	¹²⁴Cs	¹¹⁶Cs
56	¹²⁵Ba	¹¹⁶Ba
57	¹²⁶La	¹¹⁶La
58	¹²⁷Ce
59	¹²⁸Pr
60	¹²⁹Nd
61	¹³⁰Pm
62	¹³¹Sm
63	¹³²Eu