Question

Why there is no back bonding in P SiH3 3?

Answer 1

Answer:

(B) The back bonding in P(SiH3)3 isn't significant like in N(SiH3)3 bcz P has its 3p orbital (large and not so efficient) whereas N has its 2p orbital, more efficient bonding. (C) Back bonding in N(SiH3)3 so N is sp2 hybridised, hence planar. N(ch3)3 is pyramidal.

Answer 2

The back bonding in P(SiH3)3 isn't significant like in N(SiH3)3 bcz P has its 3p orbital (large and not so efficient) whereas N has its 2p orbital, more efficient bonding.