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1 December, 00:53

When group 2A element from ion they

A. lose two proton

B. gain two proton

C. lose two electron

D. gain two electron

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Answers (1)
  1. 1 December, 03:28
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    Well, knowing that group 2A elements are metals, and metals lose electrons to gain a full electron shell, we can eliminate B and D. Knowing that these are 2 electrons, that the group 2A element provides to another atom, to form an ion.

    The solution is C. Lose 2 electrons.
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