BC l_3 is a planar molecule while NC l_3 is pyramidal, because - Vidyadip

MCQ

$BC{l_3}$ is a planar molecule while $NC{l_3}$ is pyramidal, because

✓
$BC{l_3}$ has no lone pair of electrons but $NC{l_3}$ has a lone pair of electrons
B
$B - Cl$ bond is more polar than $N - Cl$ bond
C
Nitrogen atom is smaller than boron atom
D
$N - Cl$ bond is more covalent than $B - Cl$ bond

✓

Answer

Correct option: A.

$BC{l_3}$ has no lone pair of electrons but $NC{l_3}$ has a lone pair of electrons

a
Presence of bond pair and lone pair affects the shape of the molecule. This is because lone pairs and bond pairs repel each other and ultimately changes the shape of the molecule.

$BCl _3\, 3$ bond pairs and $0$ lone pair

$NCl _3 \,3$ bond pairs and $1$ lone pair

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