Answer:
In a chemical formula, a subscript can be defined as the number of atoms of the element immediately mentioned after the subscript. It simply depicts that how many atoms or molecules of a particular type does a substance comprise.
For example, the formula of water is H2O. The 2 here is the subscript which shows that there are two atoms of hydrogen present in the molecule of water. There is no number mentioned after O. Hence, we can tell that a single atom of oxygen is present.
