Which among the following statements is NOT c | vedclass

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(A) The electronegativity of $F$ $(4.0)$ is greater than that of $N$ $(3.0)$,while the electronegativity of $N$ $(3.0)$ is greater than that of $H$ $(

Vedclass · Accepted Answer

Fluorine is less electronegative than nitrogen.

Vedclass · Answer

(A) The electronegativity of $F$ $(4.0)$ is greater than that of $N$ $(3.0)$,while the electronegativity of $N$ $(3.0)$ is greater than that of $H$ $(2.1)$.In $NH_3$,the orbital dipole (due to the lone pair) and the resultant dipole moment of the three $N-H$ bonds are in the same direction,leading to a higher net dipole moment $(1.46 \ D)$.In $NF_3$,the orbital dipole and the resultant dipole moment of the three $N-F$ bonds are in opposite directions,which partially cancels out,leading to a lower net dipole moment $(0.24 \ D)$.Therefore,the statement that 'Fluorine is less electronegative than nitrogen' is incorrect.

Which among the following statements is $NOT$ correct about the dipole moment of $NH_3$ and $NF_3$?

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