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Tautomerism

Which pair of...

Question

Which pair of molecules has the strongest dipole–dipole interactions?

N H_{3}

and

N H_{3}

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C H_{4}

and

C H_{4}

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C O_{2}

and

C O_{2}

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N H_{3}

and

C H_{4}

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Solution

The correct option is A $N H_{3}$ and $N H_{3}$
$N H_{3}$ molecules have the strongest dipole - dipole interactions amongst all the given molecules due to intermolecular H - bonding as hydrogen is directly bonded to a electronegative atom $N$ .

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