Strontium-90
Isotope
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Strontium-90 is a radioactive isotope of strontium produced by nuclear fission, with a half-life of 28.8 years. It undergoes β⁻ decay into yttrium-90, with a decay energy of 0.546 MeV. Wikipedia
Protons: 38
Number of neutrons: 52
Symbol: 90Sr
Beta decay: 0.546
Half-life (t1/2): 28.79 years
Natural abundance: syn