Calcium

Calcium or ca

• atomic number is 20

• atomic weight is 40.078

• color is Silver

• state at 298.15°k is Solid

• classification is Metallic

• date of discovery is 1808

• density kg/m^3 is 1550

• melting point is 1112.15

• boiling point is 958 K

• group is Alkaline Earth Metal

• Number of neutron is 20