What compound type do metals generally form when they react with oxygen?

What compound type do metals generally form when they react with oxygen?

• A. Metal nitrates
• B. Metal oxides
• C. Metal sulfides
• D. Metal chlorides

Answer: (B)

Metals reacting with oxygen most naturally form metal oxides. Oxygen is highly electronegative and acts as the oxidizing agent, pulling electrons away from the metal atoms. The metal atoms become positive ions and pair with oxide ions (O2−) to form ionic compounds, typically written as metal oxides like MgO, Fe2O3, or Na2O. That straightforward oxidation-with-oxygen pattern is why metal oxides are the common products when metals meet oxygen. The other possibilities would require introducing nitrogen, sulfur, or chlorine into the reaction environment, or forming compounds with those elements instead of oxygen, which isn’t the typical direct product of a metal reacting with oxygen alone.

Metals reacting with oxygen most naturally form metal oxides. Oxygen is highly electronegative and acts as the oxidizing agent, pulling electrons away from the metal atoms. The metal atoms become positive ions and pair with oxide ions (O2−) to form ionic compounds, typically written as metal oxides like MgO, Fe2O3, or Na2O. That straightforward oxidation-with-oxygen pattern is why metal oxides are the common products when metals meet oxygen.

The other possibilities would require introducing nitrogen, sulfur, or chlorine into the reaction environment, or forming compounds with those elements instead of oxygen, which isn’t the typical direct product of a metal reacting with oxygen alone.