STD 12 - p -Block elements - ll — JEE STD 11 Science — Question

$A.$ Chlorophyll - Co

$B.$ Water hardness - EDTA

$C.$ Photography $-\left[ Ag ( CN )_2\right]^{-}$

$D.$ Wilkinson catalyst - $\left[\left(P h_3 P\right)_3 R h C l\right]$

$E.$ Chelating ligand - D - Penicillamine

Choose the correct answer from the options given below:

Statement-$I$: Since fluorine is more electronegative than nitrogen, the net dipole moment of $\mathrm{NF}_3$ is greater than $\mathrm{NH}_3$.

Statement-$II$: In $\mathrm{NH}_3$, the orbital dipole due to lone pair and the dipole moment of $\mathrm{NH}$ bonds are in opposite direction, but in $\mathrm{NF}_3$ the orbital dipole due to lone pair and dipole moments of $N-F$ bonds are in same direction.  In the light of the above statements. Choose the most appropriate from the options given below.