When and by who was Calcium element found ?
Calcium, symbol Ca, atomic number 20, atomic weight 40.078 and density 1.55, is a very hard, white metallic element that melts at 839 ° C. It is in the 4th period in the 2A (alkaline earth metals) group in the periodic table. It was discovered in England in 1808 by Sir Humphrey Davy.
It is the fifth most abundant element of the earth’s crust. It is not freely found in nature because it can react very easily with oxygen and water. It is obtained from minerals such as chalk, limestone and marble. Pure metal is obtained by replacing calcium atoms in lime with aluminum atoms under hot and low pressure.