How is a calcium atom different from a calcium ion?

univerkov | February 26, 2021 | education

A neutral calcium atom has a net (total) charge of 0.

Ions are formed due to gain or loss of electrons. For example, Ca2 + is a positively charged ion. It has 20 protons and 18 electrons. A normal Ca atom has 20.

Ca is positively charged because it has fewer electrons than protons. If it were negatively charged, it would have more electrons than the chloride ion (it has 18 electrons).

Metals usually undergo ionic bonds when they bond with other elements (say, non-metals). If it was related to their own kind, it would be a metallic bond. Since Ca2 + is a metal ion, it will most likely form an ionic bond.

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