Question

Trisilyamine $(Si{H}_3{)}_{3}N$ is:

• A. trigonal pyramidal and acidic
• B. trigonal pyramidal and basic
• C. trigonal pyramidal and neutral
• D. trigonal planar and weakly basic

Answer 1

Answer: (A)

trigonal pyramidal and acidic

Trisilyamine is acidic as there is partial positive change on $N$ atoms.

Here, the $e^{-}$ from $N$ shifts to $Si$ (resonance). So it gets trigonal pyramidal hybridisation.