Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

The correct statement among the following is :

  1. A

    (SiH3)3N is planar and less basic than (CH3)3N

  2. B

    (SiH3)3N is pyramidal and more basic than (CH3)3N

  3. C

    (SiH3)3N is pyramidal and less basic than (CH3)3N

  4. D

    (SiH3)3N is planar and more basic than (CH3)3N

Solution

Trisilylamine is planar, due to backbonding of lone pairs of nitrogen into vacant d-orbitals of Si. In trimethylamine, there is no such delocalisation and hence it is more basic.

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