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Strontium-82

Properties and data of the isotope 82Sr.


Contents

See also: list of Strontium isotopes.

 

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:44Isotopic 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:2.352879281959 × 10+15 Bq g-1
63591.331944846 Ci g-1
Spin 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.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
EC82Rb0.178(7) MeV

 

Parent Nuclides

Direct parent isotope is: 82Y.

 

Isotones and Isobars

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.

 

ZIsotone N = 44Isobar A = 82
2367V
2468Cr
2569Mn
2670Fe
2771Co
2872Ni
2973Cu82Cu
3074Zn82Zn
3175Ga82Ga
3276Ge82Ge
3377As82As
3478Se82Se
3579Br82Br
3680Kr82Kr
3781Rb82Rb
3882Sr82Sr
3983Y82Y
4084Zr82Zr
4185Nb82Nb
4286Mo82Mo
4387Tc
4488Ru
4589Rh
4690Pd

 

External data and identifiers

Adopted Levels, Gammas:NuDat 82Sr

 


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Last update: 2020-10-14


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