AIIMS2001ChemistryChemical Bonding and Molecular Structure
The BCl ₃ is a planar molecule where as NCl ₃ is pyramidal, because
Options
- AB - Cl bond is more polar than N - Cl bond
- BN - Cl bond is more covalent than B - Cl bond
- Cnitrogen atom is smaller than boron atoms
- DBCl ₃ has no lone pair but NCl ₃ has a lone pair of electrons.
Correct answer
D. BCl ₃ has no lone pair but NCl ₃ has a lone pair of electrons.
Step-by-step solution
No lone pair of electron is available in BCl ₃ . One lone pair of electron is available on N-atoms, it occupies a corner in the tetrahedral arrangement. Therefore, NCl ₃ appears pyramidal in shape.