MCQ
Identify the species having one $\pi$-bond and maximum number of canonical forms from the following :
- ✓$\mathrm{CO}_{3}^{2-}$
- B$\mathrm{O}_{2}$
- C$\mathrm{SO}_{2}$
- D$\mathrm{SO}_{3}$
✓
Answer
Correct option: A.
$\mathrm{CO}_{3}^{2-}$
a
Among $\mathrm{SO}_{3}, \mathrm{O}_{2}, \mathrm{SO}_{2}$ and $\mathrm{CO}_{3}^{2-}$ only $\mathrm{O}_{2}$ and $\mathrm{CO}_{3}^{2-}$ has only one $\pi$-bond
Among $\mathrm{SO}_{3}, \mathrm{O}_{2}, \mathrm{SO}_{2}$ and $\mathrm{CO}_{3}^{2-}$ only $\mathrm{O}_{2}$ and $\mathrm{CO}_{3}^{2-}$ has only one $\pi$-bond
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