Periodic table of the elements
AstatineRadonFrancium
86
Rn
Radon
(222)
2
8
18
32
18
8
86
Rn
Radon
(222)
2
8
18
32
18
8
General
NameRadon
SymbolRn
Number86
Chemical seriesNoble gases
Group / Period18 / 6
Blockp-block
CAS registry number10043-92-2

Radon is a radioactive element

Physical properties
Stategas
Density9.73 g/L
Melting point202 K (−71.15 °C, −96 °F)
Boiling point211.3 K (−61.85 °C, −79.1 °F)
Critical point377 K, 6.28 MPa

Atomic properties
Atomic Weight(222) g/mol
Crystal structurecubic face centered
Electronegativity2.20
Atomic radius
Atomic radius (calculated)120 pm
Electron configuration[Xe] 4f14 5d10 6s2 6p6
Electrons per shell2, 8, 18, 32, 18, 8
Number of protons86
Number of neutrons136

Other languages
SpanishRadón
PortugueseRádon
FrenchRadon
GermanRadon
ItalianRadon
RussianРадон
PolishRadon
Chinese
Arabicرادون
TurkishRadon
DutchRadon


Periodic table of the elements
AstatineRadonFrancium