The ability of oxygen to stabilize the highest oxidation states of transition metals significantly e — d and f Block Elements Chemistry Question

💡 Solution & Explanation

While fluorine is more electronegative, oxygen is uniquely capable of forming multiple bonds (double bonds utilizing $p\pi-d\pi$ overlap) with transition metals. This effectively neutralizes the immense positive charge density on a highly oxidized metal center (like $Mn^{7+}$), stabilizing species like $Mn_2O_7$. Fluorine can only form single bonds, maxing out at $MnF_4$ before the $Mn-F$ bond becomes unstable.