Boron (B)
Atomic number
5
Mass number
11
Electronegativity
2.04
Covalent radius
0.88
Atomic radius
1.17
Melting point
2300.0
Boiling point
4275.0
Density
2.34
Specific heat
1.02
Electrical conductivity
1.0e-6
Thermal conductivity
0.270