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

Question

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 (A) the lone pair of nitrogen opposes the dipole moment of NF3 while it is added to the dipole moment of NH3 (B) all the dipoles of NF3 are in same direction (C) all the dipoles of NH3 are in opposite direction (D) NH3 has a regular geometry while NF3 has irregular geometry which makes dipole moment of NH3 more than NF3.

Tardigrade Admin · Accepted Answer

Correct answer is (a) the lone pair of nitrogen opposes the dipole moment of NF3 while it is added to the dipole moment of NH3

Q. Although $F$ is more electronegative than $H$ , the resultant dipole moment of $N H_{3}$ is much more than that of $N F_{3}$ . It can be explained as

the lone pair of nitrogen opposes the dipole moment of $N F_{3}$ while it is added to the dipole moment of $N H_{3}$

all the dipoles of $N F_{3}$ are in same direction

all the dipoles of $N H_{3}$ are in opposite direction

$N H_{3}$ has a regular geometry while $N F_{3}$ has irregular geometry which makes dipole moment of $N H_{3}$ more than $N F_{3}$ .

Correct answer is (a) the lone pair of nitrogen opposes the dipole moment of $N F_{3}$ while it is added to the dipole moment of $N H_{3}$

Q. 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​.