Which compounds exhibits maximum dipole moment among the following?

Solution

$-\mathrm{N}{\mathrm{O}}_2$ group has electron withdrawing nature

$-\mathrm{N}{\mathrm{H}}_2$ group has electron releasing nature so in para positions $\underset{{\mathrm{\mu }}_1}{\to }$ and $\underset{{\mathrm{\mu }}_2}{\to }$ will simply add up to give the maximum value of resultant dipole moment of the molecule $\mathrm{ }(\mathrm{\mu }={\mathrm{\mu }}_1+{\mathrm{\mu }}_2)$ .

Asked in: JEE Main 2015 (11 Apr Online)

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