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  4. Which one of the following does not have a pyramidal shape ?

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Q. Which one of the following does not have a pyramidal shape ?

JEE MainJEE Main 2014The p-Block Elements - Part2

Solution:

In $N\left(SiH_{3}\right)_{3} \,\ell p$ present on nitrogen atom of 2nd shall has greater donating tendency to vacant 3d- orbital of 'Si' but not this donating tendency to vacant 3d-orbital of 'Si' but not this donating tendency with P, due to 3rd pd element.