The image attached shows the resonance structure of the bisulfite anion
Resonance structures of the bisulfite anion
There are several resonance structures that can be used to describe the polyatomic bisulfite anion. The Lewis structures show various arrangements of electrons among the atoms that preserve the same level of molecular connection overall.
The movement of electrons, usually as lone pairs or double bonds, is involved in the most prevalent resonance structures for the bisulfite ion.