MCQ
In which species, $X-O$ bond order is $1.5$ and contains $p \pi - d \pi$ bond $(s).$
- ✓$IO_2F^-_2$
- B$HCO\,O^-$
- C$SO^{2-}_3$
- D$XeO_2F_2$

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| List $-I$ (Molecule / Species) | List $-II$ |
| $(P)$ $NO_2$ (Unpaired electron in) | $(1)$ Vacant $p-$ orbital involved in hybridization |
| $(Q)$ $B_2H_6$ | $(2)$ $sp^2-$ orbital |
| $(R)$ $ClO_3$ (Unpaired electron in) | $(3)$ $sp^3-$orbital |
| $(S)$ $CH_3^+$ | $(4)$ $120^o$ Bond angle |



Product $(A)$ of the reaction is