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Chemistry · 2020
JEE Main · 7 January 2020, Shift 1 · Q35
Oxidation number of potassium in K_2 O, K_2 O_2 and KO_2, respectively, is:
Oxidation number of potassium in $\displaystyle \mathrm{K}_2 \mathrm{O}$, $\displaystyle \mathrm{K}_2 \mathrm{O}_2$ and $\displaystyle \mathrm{KO}_2$, respectively, is :
Official answer
(2)
+$\displaystyle 1$, +$\displaystyle 1$ and +$\displaystyle 1$
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JEE Main 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.