Dyke517 Dyke517

03-06-2015
Chemistry

contestada

What is the total number of electrons in a
Mg2+ ion?(1) 10 (3) 14
(2) 12 (4) 24

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lulu1991 lulu1991

03-06-2015

The answer is (1) 10. The protons of Mg atom is 12. So the Mg atom has 12 electrons. The Mg2+ ion has lost two electrons so it has two positive charge. Then the answer is 10 electrons.

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