In the reaction $A^{-n_2} + x e^- \to A^{-n_1}$,the value of $x$ is:

In the reaction $I_2 + 2S_2O_3^{2-} \to 2I^{-} + S_4O_6^{2-}$,the equivalent weight of iodine will be equal to

The value of $x$ in the partial redox equation $MnO_4^- + 8H^{+} + xe^- \rightleftharpoons Mn^{2+} + 4H_2O$ is

In the redox reaction $N_2H_4 + ClO_3^- \to NO + Cl^-$ (in basic medium),how many electrons are added in the reduction half-reaction based on the difference in oxidation states?

Consider the reaction of water with $F_2$ and suggest in terms of oxidation and reduction,which species are oxidized and reduced.

How many moles of electrons are needed to convert one mole of nitrate ion to hydrazine?