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Which of the following resonating struct...

Which of the following resonating structures is not correct for `CO_2`?
`overset(-):overset(..)underset(..)O-underset(I)C-=overset(+)O:harr:overset(+)underset(..)O-underset(II)C-=underset(..)Ooverset(-):harr`
`overset(..)underset(..)O=underset(III)C=overset(..)underset(..)Oharr:overset(+)O-=underset(IV)C-underset(..)overset(..)Ooverset(-):harr`

A

I

B

II

C

III

D

IV

Text Solution

Verified by Experts

The correct Answer is:
B
Lewis structure (II) is not acceptable because O atom bonded to carbon by a triple bond has 10 valence electrons around it. This is impossible because O atom (second period element) cannot expand its valence shell beyond 8 electrons due to the absence of vacant d orbitals.
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