Basic Information
Name: calcium
Symbol: ca
Classification: Calcium is an alkali earth metal
color:silvery-gray
Atomic weight:40.078
state: solid
Melting Point:842 oC, 1115 K
Boiling Point:1484 oC , 1771 K
Shells: 2,8,8,2
Electron configuration:1s2 2s2 2p6 3s2 3p6 4s2
Density @ 20oC: 1.55 g/cm3
Atomic volume: 29.9 cm3/mol
Structure: hcp: ccp: cubic close packed
Hardness: 1.75 mohs