Write Lewis structure of O2 ion and find out oxidation state of each oxygen atom? What is the average oxidation state of oxygen in this ion?
Understanding the role of oxygen ion (O2−) activity in 1-D crystal growth of rutile TiO2 in molten salts - CrystEngComm (RSC Publishing)
![Oxidised state MnO 4 - Purple (aq) Permanganate Oxidised state Cr 2 O 7 2- Orange (aq) Dichromate Reduced state Cr 3+ Green (aq) Chromium ion Oxidised. - ppt download Oxidised state MnO 4 - Purple (aq) Permanganate Oxidised state Cr 2 O 7 2- Orange (aq) Dichromate Reduced state Cr 3+ Green (aq) Chromium ion Oxidised. - ppt download](https://images.slideplayer.com/25/8159700/slides/slide_5.jpg)