Protactinium
Symbol:
Pa
Atomic Number: 91
Atomic Weight: 231.0359
Boiling Point: 4300 K
Melting Point: 1845 K
Density at 300K: 15.4 g/cm
3
Covalent radius: ???
Atomic radius: ???
Atomic
volume: 15.0 cm
3/mol
First
ionization potental: 5.88 V
Specific heat capacity: ??? Jg
-1K
-1
Thermal conductivity: 47 Wm
-1K
-1
Electrical conductivity: 5.6*10
6Ω
-1m
-1
Heat of fusion: ??? kJ/mol
Heat of vaporization: ??? kJ/mol
Electronegativity: 1.5 (Pauling's)