Posted by **Sara** on Tuesday, April 13, 2010 at 10:32pm.

compare the # of empty spaces in the outer shell of the non-metals with the ion charges. whats the relationship?

I don't get this question, can someone please explain. What empty spaces is it referring to ?

- Science-Bohr Model 2 -
**Rhonda**, Tuesday, April 13, 2010 at 10:38pm
I just answered that in my long answer to your last question. The empty spaces are the "holes" that the last shell has that hasn't been filled with electrons yet. Oxygen has six electrons in its outer shell so it has two empty holes in its outer shell. Therefore, its charge is plus 2.

- Science-Bohr Model 2 -
**Sara**, Tuesday, April 13, 2010 at 10:39pm
Oh, thank you for explaining that to me:-)

- Science-Bohr Model 2 -
**DrBob222**, Tuesday, April 13, 2010 at 10:43pm
Excuse me but if oxygen GAINS two electrons, its charge will be -2 (if zero initially).

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