The correct statement among the following is

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Question:

The correct statement among the following is

  1. $\left(\mathrm{SiH}_{3}\right)_{3} \mathrm{~N}$ is pyramidal and more basic than $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$

  2. $\left(\mathrm{SiH}_{3}\right)_{3} \mathrm{~N}$ is planar and more basic than $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$

  3. $\left(\mathrm{SiH}_{3}\right)_{3} \mathrm{~N}$ is pyramidal and less basic than $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$

  4. $\left(\mathrm{SiH}_{3}\right)_{3} \mathrm{~N}$ is planar and less basic than $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$

Correct Option: , 4

Solution:

nitrogen is $\mathrm{sp}^{3}$ hybrid and pyramidal no back-bonding i.e.more basic

Nitrogen $\mathrm{sp}^{2}$ hybrid and planar due to back bonding and less basic because lone pair is not available for donation.

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