Silver-122m1
Properties and data of the isotope 122Ag.
See also: list of Silver isotopes.
General data
Name of the isotope:Silver-122m1; Ag-122m1Symbol:122Ag or 12247AgMass number A:122 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:75Isotopic mass:121.92366(4) u (atomic weight of Silver-122m1)
Excitation energy: +x keVNuclide mass:121.8978781 u (calculated nuclear mass without electrons)Mass excess:-71.11025 MeVMass defect:1.093985204 u (per nucleus)Nuclear binding energy:1019.04065361 MeV (per nucleus)
8.35279224 MeV (average binding energy per nucleon)Half-life:0.55(5) sDecay constant λ:1.2602676010181 s-1Specific activity α:6.272321499624 × 10+21 Bq g-1
169522202692.55 Ci g-1Spin and parity:
(nuclear angular momentum)(1-)
Radioactive Decay
Half-life T½ = 0.55(5) s respectively 5.5 × 10-1 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β- | 122Cd | ? | | |
β-, n | 121Cd | ? | | |
Iso | 122Ag | ? | | |
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 |
---|
122Ag | | 529(13) ms | (3+) |
122m2Ag | 80(50) keV | 0.20(5) s | (9-) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 75) and isobaric (same nucleon number A = 122) with Silver-122m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 75 | Isobar A = 122 |
42 | 117Mo | |
43 | 118Tc | |
44 | 119Ru | 122Ru |
45 | 120Rh | 122Rh |
46 | 121Pd | 122Pd |
47 | 122Ag | 122Ag |
48 | 123Cd | 122Cd |
49 | 124In | 122In |
50 | 125Sn | 122Sn |
51 | 126Sb | 122Sb |
52 | 127Te | 122Te |
53 | 128I | 122I |
54 | 129Xe | 122Xe |
55 | 130Cs | 122Cs |
56 | 131Ba | 122Ba |
57 | 132La | 122La |
58 | 133Ce | 122Ce |
59 | 134Pr | 122Pr |
60 | 135Nd | |
61 | 136Pm | |
62 | 137Sm | |
63 | 138Eu | |
64 | 139Gd | |
65 | 140Tb | |
66 | 141Dy | |
67 | 142Ho | |
68 | 143Er | |
69 | 144Tm | |
Last update: 2020-10-16
Perma link: https://www.chemlin.org/isotope/silver-122m1
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