BCl_3 is a planar molecule while NCl_3 is pyr | vedclass

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(A) According to $VSEPR$ theory,the shape of a molecule is determined by the number of bond pairs and lone pairs around the central atom.$BCl_3$: The

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$BCl_3$ has no lone pair of electrons but $NCl_3$ has a lone pair of electrons

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(A) According to $VSEPR$ theory,the shape of a molecule is determined by the number of bond pairs and lone pairs around the central atom.$BCl_3$: The central Boron atom has $3$ bond pairs and $0$ lone pairs,resulting in $sp^2$ hybridization and a trigonal planar geometry.$NCl_3$: The central Nitrogen atom has $3$ bond pairs and $1$ lone pair,resulting in $sp^3$ hybridization and a pyramidal geometry due to the repulsion between the lone pair and bond pairs.

$BCl_3$ is a planar molecule while $NCl_3$ is pyramidal,because

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