Hafnium (thing)

Hafnium
Symbol: Hf
Atomic Number: 72
Atomic Weight: 178.49
Boiling Point: 4875 K
Melting Point: 2504
Density at 300 K: 13.31 g/cm³
Covalent radius: 1.44
Atomic radius: 2.16
Atomic volume: 13.6 m³/mol
First ionization potental: 6.65 V
Specific heat capacity: 0.14 J g^-1 K^-1
Thermal conductivity: 23.0 W m^-1 K^-1
Electrical conductivity: 3.4*10⁶ Ω^-1 m^-1
Heat of fusion: 21.76 kJ/mol
Heat of vaporization: 661.07 kJ/mol
Electronegativity: 1.3 (Pauling's)

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