Verified Solution • 2025–26 Session
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QJEEM19Ch5303: JEE Main 2019 Chemistry - Class 11 JEEM19Ch5303 Solution: The correct statement among the following is :
The correct statement among the following is :
Multiple Choice Options
- A (SiH3)3N is planar and more basic than (CH3)3N
- B (SiH3)3N is pyramidal and more basic than (CH3)3N
- C (SiH3)3N is pyramidal and less basic than (CH3)3N
- D (SiH3)3N is planar and less basic than (CH3)3N
Step-by-Step Verified Solution
In (CH3)3N, one lone pair and 3 sigma bond present. So it's shape is pyramidal.
But in (SiH3)3N, due to backbonding lone pair of N shift to vacant 3d orbital of Si. So now N have only 3 sigma bond and hybridization is sp2, that is why it has triangular planar geometry.
As in (SiH3)3N. nitrogen(N) don't have any lone pair to donate but in (CH3)3N, lone pair of nitrogen(N) can easily be donated. That is why (CH3)3N is more basic.