Chemical Elements History and Information Calcium

About the chemical element Calcium, its symbol, atomic number and weight, who discovered it and when.

The Atomic Elements and Their Uses

(Element) (Symbol) (Atomic number) (Atomic weight)

Calcium Ca 20 40.08

Discovered by Sir Humphry Davy of England in 1808. The calcium stored in bones and teeth is constantly being exchanged with the calcium circulating in the blood. Expectant and nursing mothers need extra calcium, or their teeth and bones can be permanently damaged. However, too much calcium can cause calcification of the joints and produce kidney stones (the largest kidney stone on record--removed in 1952 from an 80-year-old woman in London--weighed 13 lb. 14 oz.)

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