Rn

Radon

Z 86 222.0 g/molNoble Gas Radioactive

Overview Atomic Properties Thermodynamics Electromagnetism Isotopes

Group

18

Period

6

Block

p

Occurrence

From decay

Biological Role

Toxic

History

1899 (discovery)

Ernest Rutherford, Robert B. Owens

1910 (isolation)

William Ramsay, Robert Whytlaw-Gray

Named By

Friedrich Ernst Dorn

Latin Name

Radon

Abundance

Universe

x

Sun

x

Meteorites

x

Earth's crust

x

Oceans

x

Humans

x