Calcium is a mineral found in many foods that can slow bone loss during the aging process. Dairy products are rich in calcium.
What is calcium?
The chemical element calcium has the atomic number 20 and the letter Ca as its symbol. Calcium is an alkaline earth metal that reacts with air to create a black oxide-nitride coating. Its heavier homologues barium and strontium are most similar to it in terms of physical and chemical characteristics.
Calcium is the third most plentiful metal, behind iron and aluminum, and the fifth most abundant element in the crust of the Earth. The most prevalent calcium component on Earth is calcium carbonate, which may be found in limestone and the fossilized remains of ancient marine life.
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