Desintegración beta de estroncio-90

90Sr → 90Y + e + ν̄e

Descripción general

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

Rol Sustancia Coeficiente Estado
Reactivo Estroncio Sr 1 (s)
Producto Itrio Y 1 (s)

Ejemplo cotidiano

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

Importancia industrial

El Sr-90 se utiliza en generadores termoeléctricos de radioisótopos (RTG), en medidores industriales de espesor, y su descendiente Y-90 se emplea en terapia contra el cáncer.

Preguntas frecuentes

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