Question

Give me the complete list of all the amphoteric oxide without missing anyone from the whole periodic table.

Answer 1

BeO, $\text{Al}_2\text{O}_3$, $\text{Ga}_2\text{O}_3$, $\text{GeO}_2$, SnO, $\text{SnO}_2$, PbO, $\text{PbO}_2$, $\text{As}_2\text{O}_3$, $\text{As}_2\text{O}_5$, $\text{Sb}_2\text{O}_3$, $\text{Sb}_2\text{O}_5$, $\text{Bi}_2\text{O}_3$, $\text{Cr}_2\text{O}_3$, $\text{MnO}_2$, $\text{TiO}_2$, $\text{V}_2\text{O}_5$, $\text{TeO}_2$, $\text{MoO}_2$, $\text{WO}_2$, $\text{ReO}_2$, $\text{RuO}_2$, $\text{OsO}_2$, $\text{IrO}_2$, $\text{PtO}_2$.

Answer 2

Amphoteric oxides exhibit both acidic and basic properties, reacting with both acids and bases. The list provided includes oxides of elements such as Be, Al, Ga, Ge, Sn, Pb, As, Sb, Bi, Te, Cr, Mn, Ti, V, Mo, W, Re, Ru, Os, Ir, and Pt in specific oxidation states, which are known to form amphoteric oxides. For example, Aluminum Oxide ($\text{Al}_2\text{O}_3$) reacts with acid: $\text{Al}_2\text{O}_3 + 6\text{HCl} \rightarrow 2\text{AlCl}_3 + 3\text{H}_2\text{O}$, and with base: $\text{Al}_2\text{O}_3 + 2\text{NaOH} + 3\text{H}_2\text{O} \rightarrow 2\text{Na[Al(OH)}_4]$. Similarly, Zinc Oxide ($\text{ZnO}$) reacts with acid: $\text{ZnO} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2\text{O}$, and with base: $\text{ZnO} + 2\text{NaOH} + \text{H}_2\text{O} \rightarrow \text{Na}_2[\text{Zn(OH)}_4]$.