See also: List of individual Antimony isotopes (and general data sources).
General data
Name of the isotope:Antimony-117; Sb-117Symbol:117Sb or 11751SbMass number A:117 (= number of nucleons)Atomic number Z:51 (= number of protons)Neutrons N:66Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.2941176470588 (= neutron-proton ratio)Neutron excess (N-Z):15Isotopic mass:116.904842(9) u (atomic weight of Antimony-117)Nuclide mass:116.8768661 u (calculated nuclear mass without electrons)Mass excess:-88.63911 MeVMass defect:1.066119088 u (per nucleus)Nuclear binding energy:993.08353376 MeV (per nucleus) 8.48789345 MeV (average binding energy per nucleon)Separation energy:SN = 9.889(10) MeV (first neutron) SP = 4.403(8) MeV (first proton)Half-life:2.80(1) hDecay constant λ:6.876460124602 × 10-5 s-1Specific activity α:3.542283629354 × 10+17 Bq g-1 9573739.5387951 Ci g-1Spin and parity: (nuclear angular momentum)5/2+Magnetic dipole moment:μ(μN) = + 3.43(6)Quadrupole moment Q:0.2(12) barn (100 fm2)Nuclear g-factor:gl = 1.372Year of discovery:1947
Radioactive Decay
Half-life T½ = 2.80(1) h (hours) respectively 1.0080 × 104 seconds s.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 66) and isobaric (same nucleon number A = 117) with Antimony-117. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
