Arrange the following compounds in the increasing order of polarity.
A
I<II<III
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B
III<II<I
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C
II<I<III
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D
III<I<II
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Solution
The correct option is CII<I<III On polarisation of compound II, it becomes anti-aromatic in nature which destabilises it. Therefore, its polarity or dipole moment is the lowest.
Compound III on polarisation attains aromaticity which stabilises it, so it has the highest dipole moment.