Question

what is CA in chemistry

Answer 1

Answer:

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. ... Calcium is the most abundant metal and the fifth-most abundant element in the human body.

Parent material class: Metal

Discoverer: Humphry Davy

Explanation:

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Answer 2

Answer:

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. ... It is the fifth most abundant element in Earth's crust and the third most abundant metal, after iron and aluminium.