Beta Decay of Strontium-90

90Sr → 90Y + e− + ν̄e

Visão geral

Strontium-90 undergoes beta decay to yttrium-90 with a half-life of 28.8 years. Sr-90 is a major fission product and is biologically dangerous because it mimics calcium and concentrates in bones. Nuclear fallout from atmospheric testing deposited Sr-90 worldwide during the 1950s-60s.

Participantes

Papel Substância Coeficiente Estado
Reagente Strontium Sr 1 (s)
Produto Yttrium Y 1 (s)

Exemplo do cotidiano

Sr-90 was detected in children's milk teeth during the nuclear testing era, leading to the 1963 Nuclear Test Ban Treaty.

Importância industrial

O Sr-90 é utilizado em geradores termoelétricos de radioisótopos (RTG), em medidores industriais de espessura, e o seu produto de decaimento Y-90 é utilizado em terapia oncológica.

Propriedades

Tipo
Nuclear
Reversível
Não
Energia
Exotérmico
ΔH
-55000000,0 kJ/mol

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Frequently Asked Questions

What is the equation for Beta Decay of Strontium-90?
The balanced equation is: ⁹⁰Sr → ⁹⁰Y + e⁻ + ν̄ₑ.
What type of reaction is Beta Decay of Strontium-90?
Beta Decay of Strontium-90 is a nuclear reaction.
Is Beta Decay of Strontium-90 exothermic or endothermic?
Beta Decay of Strontium-90 is exothermic (releases energy). The enthalpy change (ΔH) is -55000000.0 kJ/mol.