Question

what is calcium tell me

Answer 1

Explanation:

Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Wikipedia

Symbol: Ca

Atomic mass: 40.078 u

Atomic number: 20

Electron configuration: [Ar] 4s²

Melting point: 842 °C

Van der Waals radius: 231 pm

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Answer 2

Answer:

Calcium is basically a mineral that is neccesary for us to live it apart from it helping have stronger bones calcium enables our blood to clot, our muscles to contract, and our heart to beat. About 99% of the calcium in our bodies is in our bones and teeth.

Explanation: That is about it