Question

what is the automicity of Hno3

Answer 1

atomicity is the number of atoms present in the compound.
therefore its atomicity is 5.

Answer 2

The chemical formula of nitric acid is HNO3 and it is made up of one hydrogen atom, one nitrogen atom, and three oxygen atoms. Its chemical structure indicates that it is a planar molecule and it has two resonance forms. Nitric acid is most commonly used in the production of fertilizer.