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ChemistryHardMCQ2014 · 11 Apr Online

Q36.Which one of the following does not have a pyramidal shape? (1) (CH3)3 N (2) (SiH3)3 N (3) P(CH3)3 (4) P(SiH3)3

What This Question Tests

This question tests advanced understanding of molecular geometry, specifically the exception of trisilylamine ((SiH3)3N) having a planar structure due to pπ-dπ backbonding, contrary to the typical pyramidal shape of amines.

Concepts Tested

VSEPR theoryHybridizationLone pair repulsionpπ-dπ backbonding

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