Calculate the value $x-yforXeO{F}_4.$ ($x$ = number of $\sigma$ bond pair and $y$= number of lone pair on central atom)

Q. Calculate the value of $(x-y)$ for $XeO{F}_4$, where $x$ = total number of lone pairs in $XeO{F}_4$ and $y$ = total number $d\pi -p\pi$ bonds in $XeO{F}_4$.

Q. Number of bond pairs (X) and lone pairs (Y) around the central atom in the $I_3^{-}$ ion are

Q. The number of bonding pairs electron $\left(X\right)$ and lone pairs electron $\left(Y\right)$ around the central atom in the $I_3^{-}$ ion are $X+Y$:

Q. Calculate $x+y+z$ for $H_{3}P{O}_3$ acid, where $x$ is number of lone pair, $y$ is the number of $\sigma$-bonds and $z$ is the number of $\pi$-bonds.

Q. For oxy acid $HCl{O}_x$ if $x=y=z(x,y\text{and}z$ are natural number) then calculate the value of $(x+y+z)$, Where
$x=$ Number of $O$ atoms
$y=$ Total number of lone pairs at central atom
$z=$ Total number of Pi(π) electrons in the oxy acid.