P-Block Elements Ques 585

Question: Which one of the following does not have a pyramidal shape?

Options:

A) $ {{(CH_3)}_3}N $

B) $ {{(SiH_3)}_3}N $

C) $ P{{( CH_3 )}_3} $

D) $ P{{( SiH_3 )}_3} $

Show Answer

Answer:

Correct Answer: B

Solution:

In case of $ N{{(Si{H_{^{3}}})}_3}, $ N atom is $ sp^{2} $ hybridised, the lone pair is present in 2p orbital and it is transferred to empty d orbital of Si forming $ d\pi -p\pi $ bond. Hence nitrogen with $ sp^{2} $ hybridization has trigonal planar shape.



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