A) \[BC{{l}_{3}}\] 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.
Correct Answer: A
Solution :
[a] In \[BC{{l}_{3}}\] there is \[s{{p}^{2}}\] hybridisation (planar) in \[NC{{l}_{3}}\] hybridisation is \[s{{p}^{3}}\] hence shape is pyramidal
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