Which one of the following compound is not a planar?

Question

Which one of the following compound is not a planar? (A) Option 1

(B)

(C)

(D)

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/c-zx7edjpawoyx.png" /> Here hybridisation of oxygen is sp3 . so it cannot be a planar molecule. In it lone pair of oxygen does not involve in delocalisation, otherwise it will become antiaromatic compound. Rest other are planar as they have only sp2 hybridisation.

Q. Which one of the following compound is not a planar?

Here hybridisation of oxygen is $s p^{3}$ . so it cannot be a planar molecule. In it lone pair of oxygen does not involve in delocalisation, otherwise it will become antiaromatic compound. Rest other are planar as they have only $s p^{2}$ hybridisation.