Alpha Decay of Radon-222

222Rn → 218Po + 4He

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Radon Rn 1 (g)
Sản phẩm Polonium Po 1 (s)
Sản phẩm Helium He 1 (g)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Radon testing and mitigation is a significant industry. Radon is also used in earthquake prediction research and hydrological tracing.

Tính chất

Loại
Nuclear
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-550000000,0 kJ/mol

Phản ứng liên quan

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.