Which of the following molecules has highest dipole moment?

1. $\mathrm{B}{\mathrm{F}}_3$
2. $\mathrm{N}{\mathrm{H}}_3$
3. $\mathrm{N}{\mathrm{F}}_3$
4. $\mathrm{C}\mathrm{C}{\mathrm{l}}_4$

Solution

Dipole moment of $\mathrm{B}{\mathrm{F}}_3$ and $\mathrm{C}\mathrm{C}{\mathrm{l}}_4$ is zero because these are symmetrical molecules. Dipole moment of $\mathrm{N}{\mathrm{H}}_3$ is greater than $\mathrm{N}{\mathrm{F}}_3$ .
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Asked in: JEE-TOPICTESTS-CHEMISTRY

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