MCQ
Which of the following has $p\pi -d\pi $ bonding ?
- A$NO^-_3$
- ✓$SO^{2-}_3$
- C$BO^{3-}_3$
- D$CO^{2-}_3$
This type of bonding is called p $\pi-\mathrm{p} \pi$ or $\mathrm{p} \pi-\mathrm{d} \pi$ depending on the orbital to which the electron pair is donated and from which the electron pair is donated.
In the above options $\mathrm{SO}_{3}^{-2}$ forms p $\mathrm{p} \pi-\mathrm{p} \pi$ bonding.
Hence option $\mathrm{B}$ is correct.
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