A) \[MgO\]
B) \[N{{a}_{2}}O\]
C) \[K{{O}_{2}}\]
D) \[M{{n}_{3}}{{O}_{4}}\]
Correct Answer: C
Solution :
[c] \[K{{O}_{2}}\] is superoxide, coloured and contains \[3\bar{e}\] bond (1) and (2) are oxides while (4) is mixed oxides of \[(2MnO+Mn{{O}_{2}})\]
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