Selenium
Symbol:
Se
Atomic Number: 34
Atomic Weight: 78.96
Boiling Point: 958 K
Melting Point: 494 K
Density at 300 K: 4.79 g/cm
3
Covalent radius: 1.16
Atomic radius: 1.22
Atomic
volume: 16.50 cm
3/mol
First
ionization potental: 9.752 V
Specific heat capacity: 0.32 J g
-1 K
-1
Thermal conductivity: 2.04 W m
-1 K
-1
Electrical conductivity: 8 10
6 Ω
-1m
-1
Heat of fusion: 5.54 kJ/mol
Heat of vaporization: 26.32 kJ/mol
Electronegativity: 2.55 (Pauling's)