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When a Mg2+ ion becomes a Mg atom, the radius increases because the Mg2+ ion(1) gains 2 protons

  • Mayya Alocci
  • Jul 24, 2023
  • 1 min read

August 2018 NY Regents Chemistry Exam


38 When a Mg2+ ion becomes a Mg atom, the radius increases because the Mg2+ ion (1) gains 2 protons

(2) gains 2 electrons

(3) loses 2 protons

(4) loses 2 electrons


Solution: Electrons are negative. When Mg2+ ion becomes a Mg atom, it gains two electrons to become neutral.

Answer: 2


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