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OpenStudy (anonymous):
If every oxygen ion (combined with an aluminum ion) has a charge of –2, what must the charge of each aluminum ion be? How can you tell this? Also, what has to happen to an uncharged aluminum atom so that it will bond with oxygen?
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OpenStudy (wolfe8):
Welcome to OpenStudy. You know that ions will combine with each other to obtain a net charge of 0. So O-2 must add to Al___ to be 0
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