Observe the oxidation states and properties of the general series oxides. Which of the following spe — d and f Block Elements Chemistry Question

💡 Solution & Explanation

The acid-base nature of transition metal oxides strongly depends on the oxidation state of the metal. Lower oxidation states typically form basic oxides ($MnO$ where $Mn$ is $+2$). Higher oxidation states form acidic oxides ($CrO_3$ where $Cr$ is $+6$, and $Mn_2O_7$ where $Mn$ is $+7$). Intermediate oxidation states generally yield amphoteric oxides; thus, $MnO_2$ ($Mn$ is $+4$) acts as an amphoteric oxide.