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Reference




Radon
Chemical Properties & Compounds



Symbol Atomic Number Atomic Weight Melting Point Boiling Point Phase Density Classification
Rn 86 222 -71.15 °C -61.85 °C Gas 9.73 g/L Noble Gas Radioactive Natural Element Toxic Element


86 astatineradonfrancium
Xe

Rn

Uuo
General
Name, Symbol, Number radon, Rn, 86
Chemical series noble gases
Group, Period, Block 18, 6, p
Appearance colorless
Standard atomic weight (222)  g·mol−1
Electron configuration [Xe] 4f14 5d10 6s2 6p6
Electrons per shell 2, 8, 18, 32, 18, 8
Physical properties
Phase gas
Density (0 °C, 101.325 kPa)
9.73 g/L
Melting point 202 K
(−71.15 °C, −96 °F)
Boiling point 211.3 K
(−61.85 °C, −79.1 °F)
Critical point 377 K, 6.28 MPa
Heat of fusion 3.247  kJ·mol−1
Heat of vaporization 18.10  kJ·mol−1
Heat capacity (25 °C) 20.786  J·mol−1·K−1
Vapor pressure
P(Pa) 1 10 100 1 k 10 k 100 k
at T(K) 110 121 134 152 176 211
Atomic properties
Crystal structure cubic face centered
Oxidation states 0
Electronegativity no data (scale Pauling)
Ionization energies 1st: 1037 kJ/mol
Atomic radius (calc.) 120  pm
Covalent radius 145  pm
Miscellaneous
Magnetic ordering non-magnetic
Thermal conductivity (300 K) 3.61 m W·m−1·K−1
CAS registry number 10043-92-2
Selected isotopes
Main article: Isotopes of radon
iso NA half-life DM DE (MeV) DP
211Rn syn 14.6 h Epsilon 2.892 211At
Alpha 5.965 207Po
222Rn 100% 3.824 d Alpha 5.590 218Po
References
Radon Compounds

Source: Wikipedia article Radon


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