In ${\mathrm{XeF}}_2, {\mathrm{XeF}}_4$ and ${\mathrm{XeF}}_6\left(g\right)$ the number of lone pairs on Xe respectively are :

In ${\mathrm{XeF}}_2, {\mathrm{XeF}}_4$ and ${\mathrm{XeF}}_6\left(g\right)$ the number of lone pairs on Xe respectively are 3, 2, 1.

The number of bond pairs are 2,4 and 6 respectively. The total number of valence electrons on Xe are 8.

Hence, the option D is correct.