Radon

Chemical element

A chemical element, often called simply an element, is a substance [i] that can ...

in the periodic table that has the symbol Rn and atomic number 86. A radioactive noble gas that is formed by the disintegration of radium, radon is one of the heaviest gases and is considered to be a health hazard. The most stable isotope is Rn-222 which has a half-life of 3.8 days and is used in radiotherapy.

Discussions

Discussion Features

Ask a question about 'Radon'

Start a new discussion about 'Radon'

Answer questions about 'Radon'

'Radon' discussion forum

Encyclopedia

Radon is a chemical element

Chemical element

A chemical element, often called simply an element, is a substance [i] that can...

in the periodic table that has the symbol Rn and atomic number 86. A radioactive noble gas that is formed by the disintegration of radium, radon is one of the heaviest gases and is considered to be a health hazard. The most stable isotope is Rn-222 which has a half-life of 3.8 days and is used in radiotherapy.