Alpha Decay of Radium-226

226Ra → 222Rn + 4He

Visão geral

Radium-226 emits an alpha particle to form radon-222 gas. Radium was discovered by Marie and Pierre Curie in 1898 and was the first radioactive element isolated in pure form. Marie Curie won two Nobel Prizes for her work on radioactivity. Radium's decay produces radon, a radioactive gas.

Participantes

Papel Substância Coeficiente Estado
Reagente Radium Ra 1 (s)
Produto Radon Rn 1 (g)
Produto Helium He 1 (g)

Exemplo do cotidiano

Radon gas produced by radium decay in soil seeps into basements and is the second leading cause of lung cancer after smoking.

Importância industrial

O rádio foi historicamente utilizado em mostradores luminosos de relógios e em terapia do cancro. A monitorização do rádon em casas é agora uma prática corrente.

Propriedades

Tipo
Nuclear
Reversível
Não
Energia
Exotérmico
ΔH
-460000000,0 kJ/mol

Reações relacionadas

Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Beta Decay of Strontium-90 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 Alpha Decay of Radium-226?
The balanced equation is: ²²⁶Ra → ²²²Rn + ⁴He.
What type of reaction is Alpha Decay of Radium-226?
Alpha Decay of Radium-226 is a nuclear reaction.
Is Alpha Decay of Radium-226 exothermic or endothermic?
Alpha Decay of Radium-226 is exothermic (releases energy). The enthalpy change (ΔH) is -460000000.0 kJ/mol.