Question

what is calcium? what is it electronic configuration?​

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. Its physical and chemical properties are most similar to its heavier homologues strontium and barium.

The electrical configuration of calcium is [Ar] 4s²

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. Its physical and chemical properties are most similar to its heavier homologues strontium and barium
• 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 bariumThe atomic number of calcium is 20. This means that in a neutral calcium atom, there are 20 protons in its nucleus. A neutral calcium atom also has 20 electrons. The electron configuration of a neutral calcium atom is 1s22s22p63s23p64s2 .

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