What do we call the O_2^(2-) ion?

1 Answer
anor277
Aug 31, 2017

You gots "peroxide dianion"...........

Explanation:

And a Lewis structure for ""^(-)O-O^-, which clearly derives from hydrogen peroxide, H-O-O-H, which is......

![http://chem.ucla.edu](https://useruploads.socratic.org/wiVkayCARgOrcCGogSTu_h202_1.png)

There were 2xx1(H) + 2xx6(O) valence electrons, i.e. 7 electron pairs to distribute over 4 centres. What is the oxidation state of oxygen in this molecule?

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