Antimony-120m2
Properties and data of the isotope 120Sb.
See also: list of Antimony isotopes.
General data
Name of the isotope:Antimony-120m2; Sb-120m2Symbol:120Sb or 12051SbMass number A:120 (= number of nucleons)Atomic number Z:51 (= number of protons)Neutrons N:69Isotopic mass:119.905080(8) u (atomic weight of Antimony-120m2)
Excitation energy: 78.16(5) keVNuclide mass:119.8771041 u (calculated nuclear mass without electrons)Mass excess:-88.41741 MeVMass defect:1.091875836 u (per nucleus)Nuclear binding energy:1017.07578998 MeV (per nucleus)
8.47563158 MeV (average binding energy per nucleon)Half-life:246(2) nsDecay constant λ:2817671.4656908 s-1Specific activity α:1.425917181799 × 10+28 Bq g-1
3.853830221079 × 10+17 Ci g-1Spin and parity:
(nuclear angular momentum)3+Magnetic dipole moment:μ(μN) = +2.584(6)Quadrupole moment Q:0.41(4) barn (100 fm2)Nuclear g-factor:gl = 0.86133333333333
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 |
---|
120Sb | | 15.89(4) min | 1+ |
120m1Sb | +x keV | 5.76(2) d | 8- |
120m3Sb | 2328.3+x keV | 400(8) ns | (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 = 120) with Antimony-120m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 69 | Isobar A = 120 |
38 | 107Sr | |
39 | 108Y | |
40 | 109Zr | |
41 | 110Nb | |
42 | 111Mo | |
43 | 112Tc | 120Tc |
44 | 113Ru | 120Ru |
45 | 114Rh | 120Rh |
46 | 115Pd | 120Pd |
47 | 116Ag | 120Ag |
48 | 117Cd | 120Cd |
49 | 118In | 120In |
50 | 119Sn | 120Sn |
51 | 120Sb | 120Sb |
52 | 121Te | 120Te |
53 | 122I | 120I |
54 | 123Xe | 120Xe |
55 | 124Cs | 120Cs |
56 | 125Ba | 120Ba |
57 | 126La | 120La |
58 | 127Ce | 120Ce |
59 | 128Pr | |
60 | 129Nd | |
61 | 130Pm | |
62 | 131Sm | |
63 | 132Eu | |
Last update: 2020-10-17
Perma link: https://www.chemlin.org/isotope/antimony-120m2
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