Hafnium (Hf)
Atomic number
72
Mass number
178
Electronegativity
1.3
Covalent radius
1.44
Atomic radius
2.16
Melting point
2500.0
Boiling point
4876.0
Density
13.2
Specific heat
Electrical conductivity
0.0312e6
Thermal conductivity
0.230