NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Why B F 3 is non-polar and N F 3 is polar although B F 3 and N F 3 both molecules are covalent?
Options
- AIn uncombined state boron is metal and nitrogen is gas
- BB - F bond has no dipole moment whereas N - F bond has dipole moment
- CThe size of boron atom is smaller than nitrogen
- DB F 3 is planar whereas N F 3 is pyramidal
Correct answer
D. B F 3 is planar whereas N F 3 is pyramidal
Step-by-step solution
B F 3 is planar while N F 3 is pyramidal due to the presence of lone pair of electron on nitrogen in N F 3 .