Q48 / 200 · Manipal (MET) 2014 · Chemistry

$\left(\mathrm{SiH}_3\right)_3 \mathrm{~N}$ is

  • Correct answer
    A
    planar
  • B
    pyramidal
  • C
    octahedral
  • D
    tetrahedra

Solution

In $\left(\mathrm{SiH}_3\right)_3 \mathrm{~N}$, lone pair of the nitrogen is transferred to the empty $d$-orbitals of silicon ( $p \pi-d \pi$ overlap) thereby causing planarity of unit.

Hence, the correct answer is option: 'A'.

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