Nick Name' Ca
Has 20 electrons and 20 protons and neutrons.
atomic number 20
atomic mass 40.078
Calcium is element atomic number 20 on the periodic table, which means each atom of calcium has 20 protons. It has the periodic table symbol Ca and an atomic weight of 40.078. Calcium isn't found free in nature, but it can be purified into a soft silvery-white
Discovered the element or calcium-Humphry Davy