Niobium (Nb)
Atomic number
41
Mass number
93
Electronegativity
1.6
Covalent radius
1.34
Atomic radius
2.08
Melting point
2740.0
Boiling point
5017.0
Density
8.57
Specific heat
0.26
Electrical conductivity
0.0693e6
Thermal conductivity
0.537