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Question

(A) The dipole moment depends on the electronegativity difference between the central atom and the surrounding atoms,as well as the molecular geometry

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$NH_3$

Vedclass · Answer

(A) The dipole moment depends on the electronegativity difference between the central atom and the surrounding atoms,as well as the molecular geometry. In $NH_3$,the electronegativity difference between $N$ and $H$ is significant. The dipole moments of the three $N-H$ bonds and the lone pair on $N$ all point in the same direction,resulting in a large net dipole moment $(1.47 \ D)$. In $NCl_3$,the electronegativity of $N$ $(3.04)$ and $Cl$ $(3.16)$ are very similar. The dipole moments of the three $N-Cl$ bonds point in the opposite direction to the lone pair,leading to a smaller net dipole moment $(0.6 \ D)$. $CS_2$ has a linear geometry $(S=C=S)$,making it a non-polar molecule with a net dipole moment of $0 \ D$. $C_2H_6$ (ethane) is a non-polar hydrocarbon with a net dipole moment of $0 \ D$. Therefore,$NH_3$ has the maximum dipole moment among the given options.

List-$I$ (Molecules)	List-$II$ (Dipole moment)
$A$. $HBr$	$I$. $1.04$
$B$. $H_2S$	$II$. $0$
$C$. $NH_3$	$III$. $0.79$
$D$. $CHCl_3$	$IV$. $0.95$
	$V$. $1.47$

Which of the following molecules has the maximum dipole moment?

Similar Questions

Which of the following substances has the highest dipole moment?

Which of the following pairs has dipole-induced dipole interaction as the intermolecular force?

Match the following molecules in List-$I$ with their respective dipole moments in List-$II$.
List-$I$ (Molecules) List-$II$ (Dipole moment)
$A$. $HBr$ $I$. $1.04$
$B$. $H_2S$ $II$. $0$
$C$. $NH_3$ $III$. $0.79$
$D$. $CHCl_3$ $IV$. $0.95$
$V$. $1.47$

Which of the following molecules will show a dipole moment?

Which of the following compounds has the least dipole moment?

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