The correct answer is amphoteric nature.
Strong acids, alkali metal hydroxides, and strong acids rarely dissolve TeO2 in water. Because it is amphoteric, depending on the solution it is in, it can behave as an acid or a basic. BeO is the most acidic substance found in nature since the acidity of other oxides diminishes as the central atom's electropositivity increases. Amphoteric elements include aluminum oxide, beryllium oxide, tin oxide, and zinc oxide. They react both as an acid and a basic. The solid lattice holds the oxide ions too tightly for them to interact with the water. Most acidic is P2O5. Metal oxides that dissolve in water include sodium oxide (Na2O) and potassium oxide (K2O).
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