See also: List of individual Xenon isotopes (and general data sources).
General data
Name of the isotope:Xenon-132m; Xe-132mSymbol:132mXe or 132m54XeMass number A:132 (= number of nucleons)Atomic number Z:54 (= number of protons)Neutrons N:78Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.4444444444444 (= neutron-proton ratio)Neutron excess (N-Z):24Excitation energy:2752.21(17) keVIsotopic mass:131.90415509(4) u (atomic weight of Xenon-132m)Nuclide mass:131.8745337 u (calculated nuclear mass without electrons)Mass excess:-89.27896 MeVMass defect:1.194260086 u (per nucleus)Nuclear binding energy:1112.44610455 MeV (per nucleus) 8.427622 MeV (average binding energy per nucleon)Half-life:8.39(11) msDecay constant λ:82.615873725858 s-1Specific activity α:3.771863139929 × 10+23 Bq g-1 10194224702512 Ci g-1Spin and parity: (nuclear angular momentum)(10+)Magnetic dipole moment:μ(μN) = -1.95(5)Nuclear g-factor:gl = -0.195
Radioactive Decay
Half-life T½ = 8.39(11) ms respectively 8.39 × 10-3 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
Iso
132Xe
100 %
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 78) and isobaric (same nucleon number A = 132) with Xenon-132m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
