Answer:
The correct answer is The Empirical Formula.
Explanation:
The complete question is with options, as follow:
"What is the simplest whole number ratio of atoms in a molecule or formula unit called? the molecular formula the molar mass the percent composition the empirical formula".
The empirical formula shows the ratio between the atoms of a chemical compound. That is, it indicates the elements that are present and the minimum proportion in integers that are between their atoms. This formula is also known as the “minimum formula”.
The empirical formula is the simplest expression to represent a chemical compound.
The empirical formula is the simplest whole-number ratio of atoms in a molecule or formula unit called.
