Calcium
Atomic number
20
Atomic weight
40.078
Discovery (year)
1808
Atomic radius (A)
1.97
Melting point (
o
C)
848
Boiling point (
o
C)
1487
Density (g/cm
3
)
1.54
Specific heat (cal/g
o
C)
0.149
Ionization potential (eV)
6.113
Electron Affinity (eV)
0
