Phosphorus (P)
Atomic number
15
Mass number
31
Electronegativity
2.19
Covalent radius
1.10
Atomic radius
1.23
Melting point
317.3
Boiling point
550.0
Density
1.82
Specific heat
0.77
Electrical conductivity
1.0e-11
Thermal conductivity
0.00235