Which of the following is NOT a characteristic of the transition elements in the series from scandiu — d and f Block Elements Chemistry Question

💡 Solution & Explanation

Step 1: Copper forms two primary oxides: copper(I) oxide (cuprous oxide) and copper(II) oxide (cupric oxide). Step 2: Cupric oxide (CuO) is a black solid, whereas cuprous oxide (Cu2O) is a red crystalline solid. Step 3: Thus, the oxide of copper which is red in color is Cu2O, matching option (b).