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  1. Group 2 Elements: The Alkaline Earth Metals - Chemistry …

  2. Alkaline earth metal - Wikipedia

  3. 20.5: The Alkaline Earth Metals (Group 2) - Chemistry LibreTexts

  4. Alkaline-earth metal | Properties, List, & Reactivity | Britannica

  5. Group 2: The Alkaline Earth Metals - Chemistry LibreTexts

  6. Alkaline Earth Metals: Group 2 Elements, Properties & Compounds

  7. Alkaline Earth Metals - Properties, Compounds, Applications, …

  8. Alkaline Earth Metals: Elements of the Second Main Group

  9. Alkaline Earth Metals - Science Notes and Projects