Multiple choice

Group Two elements lose

  1. one electron

  2. two electrons

  3. one proton

  4. two protons
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Group Two elements, also known as alkaline earth metals, have two valence electrons in their outermost energy level. To achieve a stable octet, they readily lose these two electrons during chemical reactions to form 2+ ions. Protons are located in the nucleus and are not gained or lost during chemical reactions.

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