ILL MARK AS BRAINLIEST:) Tell me with your own words;

How to write a formula of an ionic and covalent compound.
*Include metals with more than one charge.
*Include polyatomic ions

Explanation:

The prefix poly- means many, so a polyatomic ion is an ion that contains more than one atom. This differentiates polyatomic ions from monatomic ions, which contain only one atom. Examples of monatomic ions include \text{Na}^+Na+start text, N, a, end text, start superscript, plus, end superscript, \text{Fe}^{3+}Fe3+start text, F, e, end text, start superscript, 3, plus, end superscript, \text{Cl}^-Cl−start text, C, l, end text, start superscript, minus, end superscript, the conventions for naming ionic compounds and writing their chemical formulas.