Calcium (Ca)
Atomic number
20
Mass number
40
Electronegativity
1.00
Covalent radius
1.74
Atomic radius
2.23
Melting point
1112.0
Boiling point
1757.0
Density
1.55
Specific heat
0.63
Electrical conductivity
0.298e6
Thermal conductivity
2.0