The coefficients of $I^{–}, I{O}^{3–}$ and $H^{+}$ in the redox reaction,  $I^{-}+{IO}_3^{-}+H^{+}⟶I_2+H_{2}O$if balanced are respectively

By balancing the equation we can easily get the coefficients of the given chemical 

Species. The balanced equation is 

${\text{5I}}^{-}+{\mathrm{IO}}_3^{-}+6{\mathrm{H}}^{+}⟶3{\mathrm{I}}_2+3{\mathrm{H}}_2\mathrm{O}$

The coefficients are $5, 1$ and $6$