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Calcium is a very important element to human physiology, as calcium-phosphate salts form the basis for the creation of bones. Calcium in its pure form is referred to as "the white element" and is kept sealed in underground chambers due to the hazards involved in its handling.

Name Calcium
Symbol Ca
Atomic number 20
Atomic mass 40.1 amu
Classification Standard metal
Crystal structure Cubic
Color Silver
Date of discovery 1808
Name of discoverer Sir Humphrey Davy
Name origin From the Latin calcis.
Uses Calcium is one of the primary elements in bones, shells, etc. Taking Calcium internally can promote bone growth.
Obtained from Chalk, limestone, marble, vitamin to promote bone growth.