The oxidation state of Na, K, Rb respectively in Na2O2,KO2,RbO2 is :
A
+1, +1, +1
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B
+1, -1, +1
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C
+1, +1, -1
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D
-1, -1, -1
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Solution
The correct option is A +1, +1, +1 In all these oxides the oxidation state of the alkali metal (Na2O2−peroxide,KO2−superoxide,RbO2−superoxide) is +1. Hence, correct option is a.