what is the atomic number of calcium
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2
Answer:
atomic number of calcium is 20
Answered by
2
Answer:
20
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.
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