MHT CET 2022 Chemistry question

Which among the following statements is NOT correct about dipole moment of and ?

(A)Fluorine is less electronegative than nitrogenCorrect
(B)The dipole moment of is more than that of
(C)In orbital dipole is in the same direction as that of resultant dipole moment of N- H bonds
(D)In orbital dipole is in the opposite direction of the resultant dipole moment of three N – F bonds

Answer: (A)

Solution

Fluorine (EN 4.0) is more electronegative than nitrogen (3.0), so statement (A) is incorrect. In the N–H bond dipoles point towards N and add to the lone pair orbital dipole, giving a large resultant dipole moment (1.47 D); in

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Question ID VK-094440