Question

(3) What are the ions present in these compounds?
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Answer 1

Answer:

MgO is an ionic compound. (iii) The ions present in Na2O are sodium ions (2Na+) and oxide ion O2-.

Answer 2

Explanation:

Ionic compounds are compounds composed of ions, charged particles that form when an atom (or group of atoms) gains or loses electrons. (A cation is a positively charged ion; an anion is a negatively charged ion.) Covalent or molecular compounds form when elements share electrons in a covalent bond to form molecules.

MgO is an ionic compound. (iii) The ions present in Na2O are sodium ions (2Na+) and oxide ion O2.