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December 21, 2014

Homework Help: chemistry

Posted by micheal on Thursday, July 23, 2009 at 4:27pm.

1. Need help Assigning oxidation numbers. Is it true that wehn looking at atoms in compounds from group 1 or 2 they are given the oxidization number which is the same as there charge example NaCl Na has an oxidization number of 1?
But is this also true for atoms in compounds which are from the 17 group exammple cacl2 cl has an oxidization number of -1 because it is found in the 17th group.



2. If a compound is given in which neither oxidization number is known is there charge automatically assighned exampple CN^- thank you.

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