radon

astatine$\longleftarrow$ 86 $\longrightarrow$francium

Pronunciation

• enPR: rā'dŏn, IPA ^(key): /ˈreɪdɒn/

• Audio (UK)

  (file)

• Hyphenation: ra‧don

Noun

Singular radon

Plural none

1. (uncountable) Radon is a radioactive element with atomic number 86.

   Radon is a tasteless, colorless and odorless gas.