Question

If the atomic number of calcium is 20. What will be the atomic number of Ca^2^+ ?


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Answer 1

Answer:

Atomic number of Ca2+ is 20

Explanation:

In Calcium(2+):

-Number of protons is 20

-Number of electrons is 18

-Number of neutrons is 20

Thus the atomic number or proton number of a chemical element is the number of protons found in the nucleus of an atom. therefore atomic number is 20.

Also Ca2+ give up its 2 electrons. Thats why it becomes positively charged but the number of proton remains the same.

Hope this helps you.