The oxidation number of $N$ in ${N_2}H_5^+$ is:

What is the oxidation number of $Xe$ in $Ba_2XeO_6$?

What is the oxidation number of $Cl$ in bleaching powder?

Oxidation number of potassium in $K_2O$,$K_2O_2$ and $KO_2$,respectively,is

Calculate the oxidation number of sulfur,chromium,and nitrogen in $H_2SO_5$,$Cr_2O_7^{2-}$,and $NO_3^-$. Suggest the structures of these compounds and explain the fallacy in the direct calculation of the oxidation number for $H_2SO_5$.

What are the oxidation states of phosphorus in the following:
$(i)$ $H_{3}PO_{3}$
$(ii)$ $PCl_{3}$
$(iii)$ $Ca_{3}P_{2}$
$(iv)$ $Na_{3}PO_{4}$
$(v)$ $POF_{3}$