Alpha Decay of Radium-226

226Ra → 222Rn + 4He

Tổng quan

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.

Người tham gia

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

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Radium was historically used in luminous watch dials and cancer therapy. Radon monitoring in homes is now standard practice.

Tính chất

Loại
Nuclear
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-460000000,0 kJ/mol

Phản ứng liên quan

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.