A) Superoxide and -1
B) Superoxide and \[-1/2\]
C) Peroxide and \[-1/2\]
D) Oxide and -2
Correct Answer: B
Solution :
In \[K{{O}_{2}}\], the nature of oxygen species and the oxidation state of oxygen atom are, superoxide and \[-1/2\] respectively. Superoxide ion is \[O_{2}^{-}\]. Let X be oxidation state of oxygen. The oxidation state of \[K\] is\[+1\]. \[+1+2(X)=0\]\[2X=-1\] \[X=-\frac{1}{2}\]
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