Chemical Bonding: Dipole moment MCQ

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Dipole momentHardQuestion 600330

Question

Among ortho, meta and para nitrotoluene, the molecule with the largest dipole moment is:

A
ortho
Correct
B
meta
C
para
D
All equal

Correct answer

ortho

Explanation

In ortho-nitrotoluene, the NO₂ and CH₃ groups are adjacent. Both CH₃ (+I) and NO₂ (−M) contributions add in ortho due to spatial proximity and mutual reinforcement. Ortho isomer generally has the largest dipole moment in this series.

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