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MDCAT Chemistry QUESTION #7795
Question 1

Which alkali metal forms only normal oxide (M₂O) with oxygen?

  • K
  • Li✔️
  • Na
  • Rb
Correct Answer Explanation

Lithium forms only Li₂O (normal oxide). Na forms Na₂O₂ (peroxide); K, Rb, Cs form superoxides (MO₂).