A) \[NCl\] bond is more covalent than \[BCl\] bond
B) nitrogen atom is smaller than boron atom
C) \[BCl\]bond is more polar than \[N-Cl\]bond
D) \[\text{BC}{{\text{l}}_{\text{3}}}\]has no lone pair of electrons but \[NC{{l}_{3}}\] has a lone pair of electrons
Correct Answer: D
Solution :
\[\text{BC}{{\text{l}}_{3}}\]has trigonal planar structure due to 3 bond pairs in the valence shell of boron where as \[\text{NC}{{\text{l}}_{\text{3}}}\]has distorted tetrahedral structure due to one lone pair and three bond pair in the valence shell of nitrogen.
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