molecular formula

noun

, Chemistry.

1. a chemical formula that indicates the kinds of atoms and the number of each kind in a molecule of a compound.

molecular formula

noun

1. See structural formula, empirical formula
   a chemical formula indicating the numbers and types of atoms in a molecule Compare empirical formula structural formula

   H2SO4 is the molecular formula of sulphuric acid

molecular formula

1. A chemical formula that shows the total number and kinds of atoms in a molecule, but not their structural arrangement. For example, the molecular formula of aspirin is C 9 H 8 O 4 .
2. Compare empirical formula

Word History and Origins

Origin of molecular formula¹

First recorded in 1900–05

Example Sentences

This fact, coupled with the determination of the vapour density of the gas, establishes the molecular formula CO.

From Project Gutenberg

That the volume relations may be correct a gaseous element must be given its molecular formula.

From Project Gutenberg