Which of the following halides cannot be hydrolysed easily?

$\text{ (P) }{\mathrm{TeF}}_6$ $\text{ (Q) }{\mathrm{SF}}_6$

$\text{ (R) }{\mathrm{NCl}}_3$  $\text{ (S) }{\mathrm{NF}}_3$

$\text{ Choose the correct code. }$

Cl's empty d- orbitals lead ${\mathrm{NCl}}_3$ to undergo hydrolysis. - Thus, only ${\mathrm{NF}}_3$ is resistant to hydrolysis.

$S{F}_6$has steric hindrance While $N{F}_3$ does not have vacant orbital on either N or F

Hence correct option D