John S.

asked • 01/26/18

Mg^2+ Is this saying that the magnesium has gained two electrons? How do I determine the amount of protons and neutrons?

I am reading chapter 2 of my textbook for the first time and it is talking about ions and how they either gain or lose an electron. What information am I supposed to take away or infere by the negative and positive numbers in the upper right hand of the symbol?

Arturo O.

The nucleus is not changed during ionization of an atom. The atom may gain or lose electrons, but the number of protons and neutrons in the nucleus remains the same.


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