Beta Decay of Strontium-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 Strontium Sr 1 (s)
Producto Yttrium 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.

Propiedades

Tipo
Nuclear
Reversible
No
Energía
Exotérmico
ΔH
-55000000,0 kJ/mol

Reacciones relacionadas

Alpha Decay of Radium-226 Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Plutonium-239 Fission Electron Capture by Beryllium-7

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.