Antimony-124m2
Properties and data of the isotope 124Sb.
See also: list of Antimony isotopes.
General data
Name of the isotope:Antimony-124m2; Sb-124m2Symbol:124Sb or 12451SbMass number A:124 (= number of nucleons)Atomic number Z:51 (= number of protons)Neutrons N:73Isotopic mass:123.9059358(16) u (atomic weight of Antimony-124m2)
Excitation energy: 36.8440(14) keVNuclide mass:123.8779599 u (calculated nuclear mass without electrons)Mass excess:-87.62024 MeVMass defect:1.1256797 u (per nucleus)Nuclear binding energy:1048.56388647 MeV (per nucleus)
8.45616037 MeV (average binding energy per nucleon)Half-life:20.2(2) minDecay constant λ:0.00057190361432339 s-1Specific activity α:2.800068393302 × 10+18 Bq g-1
75677524.143316 Ci g-1Spin and parity:
(nuclear angular momentum)(8)-
Radioactive Decay
Half-life T½ = 20.2(2) min (minutes) respectively 1.212 × 103 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
Iso | 124Sb | 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 |
---|
124Sb | | 60.20(3) d | 3- |
124m1Sb | 10.8627(8) keV | 93(5) s | 5+ |
124m3Sb | 40.8038(7) keV | 3.2(3) μs | 3+,4+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 73) and isobaric (same nucleon number A = 124) with Antimony-124m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 73 | Isobar A = 124 |
41 | 114Nb | |
42 | 115Mo | |
43 | 116Tc | |
44 | 117Ru | 124Ru |
45 | 118Rh | 124Rh |
46 | 119Pd | 124Pd |
47 | 120Ag | 124Ag |
48 | 121Cd | 124Cd |
49 | 122In | 124In |
50 | 123Sn | 124Sn |
51 | 124Sb | 124Sb |
52 | 125Te | 124Te |
53 | 126I | 124I |
54 | 127Xe | 124Xe |
55 | 128Cs | 124Cs |
56 | 129Ba | 124Ba |
57 | 130La | 124La |
58 | 131Ce | 124Ce |
59 | 132Pr | 124Pr |
60 | 133Nd | 124Nd |
61 | 134Pm | |
62 | 135Sm | |
63 | 136Eu | |
64 | 137Gd | |
65 | 138Tb | |
66 | 139Dy | |
67 | 140Ho | |
Last update: 2020-10-17
Perma link: https://www.chemlin.org/isotope/antimony-124m2
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