Radon

Physical properties


Physical state @ 20°C: Gas
Color: Ordinary temperatures: Colorless [4]
Below the freezing point: Radon exhibits a brilliant phosphorescence, which becomes yellow as the temperature is lowered, and orange-red at the temperature of liquid air
Molecular weight (g/mol): 222 (Approximately) [1]
Melting point (°C): List of melting points -71 [1]
Boiling point (°C): List of boiling points -62 [1]
Critical temperature (°C): 104 [2,4]
Critical pressure (kPa): 6280 [4]
Density (g/cm3): Density list Gas: 0.00973 [1,4]
Liquid: 4.400 [4]
Molar volume (cm3): 50.50
Solubility: Water: 230 cm3/L (Approximately, 20 °C) [3]