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Chemistry
Oxidation number of potassium in K2O, K2O2 and KO2, respectively, is :
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Q. Oxidation number of potassium in $K_2O$, $K_2O_2$ and $KO_2$, respectively, is :
JEE Main
JEE Main 2020
Redox Reactions
A
$+ 1, \, + 1$ and $+ 1$
39%
B
$+2, \,+1$ and $+\frac{1}{2}$
6%
C
$+ 1,\, + 2$ and $+ 4$
49%
D
$+1,\,+ 4$ and $+2$
6%
Solution:
Potasisum has an oxidation of +1 (only) in combined state.