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2/3 mole of ${\mathrm{MnO}}_4^{-}$and $1/3$ mole of ${\mathrm{MnO}}_2$

$1/3$ mole of ${\mathrm{MnO}}_4^{-}$and $2/3\mathrm{mole}$ of ${\mathrm{MnO}}_2$

$1/3$ mole of ${\mathrm{Mn}}_2{\mathrm{O}}_7$ and $1/3\mathrm{mole}$ of ${\mathrm{MnO}}_2$

$2/3\mathrm{mole}$ of ${\mathrm{Mn}}_2{\mathrm{O}}_7$ and $1/3$ mole of ${\mathrm{MnO}}_2$.