Symbolic representation of an actual number of atoms present in a molecule is called:
none of these
The correct option is B molecular formula The number of atoms of each element in a compound is given by the molecular formula. For example:
By looking at the molecular formula of water, one can understand it has $$2$$ atoms of hydrogen and $$1$$ atom of oxygen. Similarly, other compounds also have a fixed number of atoms which is understood by the molecular formula.