See also: List of individual Strontium isotopes (and general data sources).
General data
Name of the isotope:Strontium-82; Sr-82Symbol:82Sr or 8238SrMass number A:82 (= number of nucleons)Atomic number Z:38 (= number of protons)Neutrons N:44Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.1578947368421 (= neutron-proton ratio)Neutron excess (N-Z):6Isotopic mass:81.918400(6) u (atomic weight of Strontium-82)Nuclide mass:81.8975548 u (calculated nuclear mass without electrons)Mass excess:-76.00991 MeVMass defect:0.76020751999999 u (per nucleus)Nuclear binding energy:708.12874363 MeV (per nucleus) 8.63571639 MeV (average binding energy per nucleon)Separation energy:SN = 12.553(7) MeV (first neutron) SP = 7.842(8) MeV (first proton)Half-life:25.35(3) dDecay constant λ:3.164708801592 × 10-7 s-1Specific activity α:2.326500745571 × 10+15 Bq g-1 62878.398528949 Ci g-1Spin and parity: (nuclear angular momentum)0+Charge radius:4.2478(30) femtometer fmYear of discovery:1952
Radioactive Decay
Half-life T½ = 25.35(3) d respectively 2.190240 × 106 seconds s.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 44) and isobaric (same nucleon number A = 82) with Strontium-82. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
