MCQ
Given below are two statements one is labelled as
Assertion (A) and the other is labelled as Reason (R).
Assertion (A): $NH _3$ and $NF _3$ molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of $NH _3$ is greater than that of $NF _3$.
Reason (R): In NH₁, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the N-H bonds. F is the most electronegative element.
In the light of the above statements, choose the correct answer from the options given below:
Assertion (A) and the other is labelled as Reason (R).
Assertion (A): $NH _3$ and $NF _3$ molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of $NH _3$ is greater than that of $NF _3$.
Reason (R): In NH₁, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the N-H bonds. F is the most electronegative element.
In the light of the above statements, choose the correct answer from the options given below:
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- B(A) is false but (R) is true
- C(A) is true but (R) is false
- DBoth (A) and (R) are true but (R) is NOT the correct explanation of (A)
