Although F is more electronegative than H, the resultant dipole moment of NH 3 is much…
Chemistry · Class 11 · CBSE — Chemical Bonding and Molecular Structure
Although F is more electronegative than H, the resultant dipole moment of NH3 is much more than that of NF3. It can be explained as
the lone pair of nitrogen opposes the dipole moment of NF3 while it is added to the dipole moment of NH3
- all the dipoles of NF3 are in same direction
- all the dipoles of NH3 are in opposite direction
- NH3 has a regular geometry while NF3 has irregular geometry which makes dipole moment of NH3 more than NF3.
Answer
(A) the lone pair of nitrogen opposes the dipole moment of NF 3 while it is added to the dipole moment of NH 3
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