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Assertion : Dipole moment of NH(3) is gr...

Assertion : Dipole moment of `NH_(3)` is greater than that of `NF_(3)`.
Reason : Nitrogen is more electronegative than fluorine.

A

both assertion and reason are true and reason is the correct explanation of assertion.

B

both assertion and reason are true but reason in not the correct explanation of assertion.

C

assertion is true but reason is false.

D

both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
In case of `NH_(3)`, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the three N - H bonds whereas in `NF_(3)` the orbital dipole is in the direction opposite to the resultant dipole moment of three N - F bonds which decreases the dipole moment of `NF_(3)` as shown below :
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