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.

a graduated cylinder.

explanation:

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.