Total number of lone pairs of electrons in $XeOF_4$ is

$Xe$ has maximum electronegativity $(EN)$ in which of the following compounds?

Give the formula and describe the structure of a noble gas species which is isostructural with:
$(i)$ $ICl_{4}^{-}$
$(ii)$ $IBr_{2}^{-}$
$(iii)$ $BrO_{3}^{-}$

Which element among the following does $NOT$ form diatomic molecules?

Which noble gas has the least tendency to form compounds?

Which of the following xenon-oxo compounds may not be obtained by hydrolysis of xenon fluorides?