MCQ
The dipole moment of $o, p$ and $m-$ dichlorobenzene will be in the order
- A$o > p > m$
- B$p > o > m$
- C$m > o > p$
- ✓$o > m > p$
✓
Answer
Correct option: D.
$o > m > p$
d
The dipole moment of $p$ - dichlorobenzene is zero because of symmetrical structure.
The dipole moment of $p$ - dichlorobenzene is zero because of symmetrical structure.
$o$-dichlorobenzene has a higher dipole moment due to a lower bond angle than the $m$-isomer. Hence, the order of increasing dipole moment is :
$p$-dichlorobenzene $\,<\, m$-dichlorobenzene $\,<\, o$-dichlorobenzene
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