Question

The $F$ is more electronegative than $H$ , however the resultant dipole moment of $NH_{3}$ is much greater than that of $NF_{3}$ . This can be explained as

• A. The lone pair of nitrogen opposes the dipole moment of $NF_{3}$ while it is added to the dipole moment of $NH_{3}$ .
• B. All the dipoles of $NF_{3}$ are in same direction.
• C. All the dipoles of $NH_{3}$ are in opposite direction.
• D. $NH_{3}$ has a regular geometry while $N F_{3}$ has irregular geometry which makes dipole moment of $NH_{3}$ more than $NF_{3}$ .

Answer 1

Answer: (A)

Dipole moment $=4.90\times 10^{- 30}Cm$ Dipole moment $=0.80\times 10^{- 30}Cm$