The chemical formula of a covalent molecular substance gives the number of atoms per molecule. The formula of a covalent network or ionic compound gives the simplest ratio of atoms/ions in the ...

The general formula for the alkanes is C n H 2n+2 (where ... The table shows four alkanes, their molecular formulae, displayed formulae and structural formulae as well as a drawing of their ...

HITHERTO the balance of evidence as to the glucose structure has favoured the adoption of γ-oxide ring formula (II.) which it is now customary to describe as a butylene- or 1: 4-oxide structure.