All chemical elements

Symbol

Rn

Atomic number

86

Chemical property

Noble gas

Origin o the name

From radium, as it was first detected as an emission from radium during radioactive decay

Group

18

Period

6

Density (g/cm³)

0.00973

Melting point (K)

202

Boiling point (K)

211.3

Heat capacity (J/(g·K))

0.094

Electro-negativity

2.2

Abundance in earth's crust (mg/kg)

0