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Question

Choose the correct statement(s) with respect to the given molecule

A
It is bicyclic planar molecule
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B
It is non planar molecule
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C
It is non-aromatic compound
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D
It is antiaromatic compound
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Solution

The correct options are
A It is bicyclic planar molecule
D It is antiaromatic compound
The compound name is Pentalene and its a bicyclic planar compound.
By using Huckel's rule,
(i) It is cyclic compound
(ii) It is a planar compound
(iii) It has extended conjugation
(iv) It has 8 π electrons which follows 4n rule where n is 2.
Hence it is an antiaromatic compound.

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