Science, asked by xCHOCLATEBOIx, 11 days ago

Define Calcium.

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Answered by anamikagourid

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Answered by XxitzzurheartbeatxX

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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.

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