PbO2 $ \to $ PbO; $\Delta $G298 < 0 SnO2 $ \to $ SnO; $\Delta $G298 > 0 Most probable oxidation state of Pb and Sn will be

Question

PbO₂ $ \to $ PbO; $\Delta $G₂₉₈ < 0
SnO₂ $ \to $ SnO; $\Delta $G₂₉₈ > 0

Most probable oxidation state of Pb and Sn will be

Pb⁴⁺, Sn⁴⁺