Atoms of which two elements will form an ionic bond? a and o, fe and co, mg and cl, or rb and al

The atoms of Mg (Magnesium) and Cl (Chlorine) will form an ionic bond. Ionic bond is basically formed by the sharing of electrons. Magnesium being a metal has two electrons in its outermost shell which Mg can readily loose to attain stability, chlorine on the other hand has seven electrons in the outermost shell so it can accept one electron to attain stability. So, both Mg  Cl can form ionic bond with each other so form a stable compound MgCl2.

Option (c) is the correct answer.

Explanation:

When there is transfer of electrons from one atom to another then it results in the formation of ionic bond.

This bond formation takes place between a metal and a non-metal.

Mg being a cation has excess of electrons and Cl being an anion has deficiency of electrons. Therefore, in order to attain stability there will be transfer of electrons between Mg and Cl.

Thus, out of the given options Mg and Cl will form an ionic bond

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i wish you would have provided choices to simplify it and allow me to give an exact answer.