Question 12
H3PO3 can be represented by structures 1 and 2 shown below. Can these two structures be taken as the canonical forms of the resonance hybrid representing H3PO3? If not, give reasons for the same.
The most favourable condition for writing resonating structures is that the different resonating structures must have same position of atoms.
Here in the given example the H atom has changed its position in the second structure as compared to first ,therefore these two structures cannot be considered as the resonating structures for the given compound.
