మూస:Infobox radon

రేడాన్, ₀₀Rn

రేడాన్
Pronunciation	/ˈreɪdɒn/ ​(RAY-don)
Appearance	colorless gas
రేడాన్ in the periodic table
Group	group 18 (noble gases)
Period	period 6
Block
Electrons per shell	2, 8, 18, 32, 18, 8
Physical properties
Phase at STP	gas
Melting point	202 K ​(−71 °C, ​−96 °F)
Boiling point	211.5 K ​(−61.7 °C, ​−79.1 °F)
Density (at STP)	9.73 g/L
when liquid (at b.p.)	4.4 g/cm3
Critical point	377 K, 6.28 MPa
Heat of fusion	3.247 kJ/mol
Heat of vaporization	18.10 kJ/mol
Molar heat capacity	5R/2 = 20.786 J/(mol·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 110 121 134 152 176 211
Atomic properties
Oxidation states	0, +2, +6
Electronegativity	Pauling scale: 2.2
Covalent radius	150 pm
Van der Waals radius	220 pm
Other properties
Natural occurrence	from decay
Crystal structure	​face-centered cubic (fcc)
Thermal conductivity	3.61 m W/(m⋅K)
Magnetic ordering	non-magnetic
CAS Number	10043-92-2
History
Discovery	Friedrich Ernst Dorn (1898)
First isolation	William Ramsay and Robert Whytlaw-Gray (1910)
Isotopes of రేడాన్

References

These references will appear in the article, but this list appears only on this page.