Alpha Decay of Radon-222

222Rn → 218Po + 4He

概要

Radon-222, a radioactive noble gas, alpha decays to polonium-218 with a half-life of 3.82 days. As the densest naturally occurring gas, radon accumulates in basements and enclosed spaces. Its short-lived decay products (Po-218, Po-214) deposit in lungs and cause radiation damage.

参加者

役割 物質 係数 状態
反応物 Radon Rn 1 (g)
生成物 Polonium Po 1 (s)
生成物 Helium He 1 (g)

日常の例

EPA recommends testing homes for radon, which causes an estimated 21,000 lung cancer deaths per year in the US alone.

産業上の重要性

ラドンの検査と緩和は重要な産業です。ラドンは地震予測研究や水文学的トレーシングにも使用されています。

特性

タイプ
Nuclear
可逆的
いいえ
エネルギー
発熱性
ΔH
-550000000.0 kJ/mol

関連する反応

Alpha Decay of Radium-226 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 Radon-222?
The balanced equation is: ²²²Rn → ²¹⁸Po + ⁴He.
What type of reaction is Alpha Decay of Radon-222?
Alpha Decay of Radon-222 is a nuclear reaction.
Is Alpha Decay of Radon-222 exothermic or endothermic?
Alpha Decay of Radon-222 is exothermic (releases energy). The enthalpy change (ΔH) is -550000000.0 kJ/mol.