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Question

Phenanthrene is antiaromatic.

A
True
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B
False
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Solution

The correct option is B False
Phenanthrene is aromatic. It has planar cyclic conjugated system of 14 pi electrons.
A cyclic planar compounds with a conjugated system of 4n + 2 pi electrons is aromatic.
Note:
4n+2=4(3)+2=14
n=3
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