Which of the following statement is false for trisilylamine?

Chemistry Chemical Bonding and Molecular Structure General Single Correct MCQ

Published on: August 12, 2026

Three sp 2 orbitals are used for σ bonding, giving a plane triangular structure.

The lone pair of electrons occupy a p-orbital at right angles to the plane triangle and this overlaps with empty p–orbitals on each of the three silicon atoms resulting in π bonding.

The N–Si bond length is shorter than the expected N–Si bond length.

It is a weaker Lewis base than trimethyl amine.

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The correct answer is:

There is pπ–dπ delocalization of lone pair of electron on nitrogen atom and empty d-orbital of silicon but not pπ– pπ, one of the 2s-orbital electrons jumps to the last P z orbital and does not participate in sp 2 hybridization.

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