Write down the formulas of sulfur oxides (IV) and (VI), manganese (II), (IV) and (VII), chromium (II), (III) and (VI), tin (II) and (IV).

will be: SO2, SO3, MnO, MnO2, Mn2O7, CrO, Cr2O3, CrO3, SnO, SnO2.

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