Question
Sat October 06, 2012 By:
 

sodium forms peroxide while lithium forms monoxide why? explain the case briefly.

Expert Reply
Sun October 07, 2012
Lithium being very small in its group forms only oxide. It does not form peroxide. If it forms oxide the formula will be Li2O (oxidation state of oxygen is -2) while for peroxide state at drastic condition the formula will be Li2O2(oxidation state of oxygen is -1). In oxide there is direct bond between metal and oxygen while in peroxide –O-O- linkage will be present and metals are attached at the adjacent points.
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