February 19, 2017

Homework Help: Honors Chemistry

Posted by Emily (different from one before me) on Monday, September 28, 2009 at 12:25am.

I have to fill in the blanks of these questions with the elements H (hydrogen), Co (cobalt), Ga (gallium), and O (oxygen), but different sources are telling me different things:

7. Its most common oxidation state is -2

8. A metal with more than one oxidation state

9. Metal with an oxidation number of +3

10. Has oxidation numbers of +1 and -1

Does anyone know which element goes with which criteria? Any help is greatly appreciated! :D

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