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JEE Main2014ChemistryChemical Bonding and Molecular StructureActual

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

Options

  1. A( CH ₃ )₃ ~N
  2. B( SiH ₃ )₃ ~N
  3. CP ( CH ₃ )₃
  4. DP ( SiH ₃ )₃

Correct answer

B. ( SiH ₃ )₃ ~N

Step-by-step solution

In case of N ( SiH ₃ )₃ ~N atom is s p^2 hybridised, the lone pair is present in 2 p orbital and it is transferred to empty d orbital of Si forming d -p bond. Hence nitrogen with s p^2 hybridization has trigonal planar shape.

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