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Solution: In which compound is the oxidation state of oxygen not –2?      A) Al2O3      B) Li2O      C) K2O2      D) MgO           E) CO

Problem

In which compound is the oxidation state of oxygen not –2?     

A) Al2O3     

B) Li2O     

C) K2O2     

D) MgO          

E) CO