Saturday, 20 June 2015

inorganic chemistry - Why can some ions have different valence?


Like $\ce{Fe}$, it can be $\ce{Fe^{2+}}$ or $\ce{Fe^{3+}}$, same with $\ce{Ni}$ and $\ce{Co}$, what determines whether the ionic compound will be $\ce{Fe^{2+}}$ or $\ce{Fe^{3+}}$?




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readings - Appending 内 to a company name is read ない or うち?

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