In $XeO_3$ and $XeF_6$ the oxidation state of $Xe$ is

Which one of the following noble gases is not found in the atmosphere?

Which noble gas element from the following exhibits the highest number of different oxidation states?

Which of the following statements are correct regarding $XeF_2$ and $XeF_4$?

The last element of the $p$-block in the $6$th period is represented by which outermost electronic configuration?

The incorrect statement regarding the following reactions is:
$XeF_6 + \text{Excess } H_2O \rightarrow 'X' + HF$
$XeF_6 + 2 H_2O \rightarrow 'Y' + HF$