Question

the relative size of two quantities expressed as the quotient of one divided by the other, written as a:b or a/b.
the smallest unit in which a substance naturally exists, which can be an atom, a molecule, or a formula unit.
the smallest neutral unit of a non - molecular substance (like an ionic compound or covalent network solid), used for stoichiometric calculations.
a mathematical expression that represents the simplest whole - number ratio of elements in a compound.
empirical formula

Explanation:

The term "Empirical Formula" refers to a mathematical expression that represents the simplest whole - number ratio of elements in a compound. This is a fundamental concept in chemistry, where the empirical formula is used to describe the relative proportions of atoms in a compound. For example, if a compound has carbon and hydrogen in a ratio of 1:2, the empirical formula would be \(CH_2\).

Answer:

A mathematical expression that represents the simplest whole - number ratio of elements in a compound.