Oxidation number of potassium in $K_{2} O, K_{2} O_{2}, K O_{2}$ respectively, are :

+ 2, + 1 and + \frac{1}{2}

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+ 1, + 1 and + 1

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+ 1, + 4 and + 2

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+ 1, + 2 and + 4

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Solution

The correct option is B $+ 1, + 1 and + 1$
Potassium is an element which belongs to alkali metal group. All alkali metals show only one oxidation state,i.e., $+ 1$ . Therefore, potassium in all its oxides shows +1 oxidation state. This can also be shown as,
Oxidation number in $_{2} - 2 O$

Hence, oxidation number of Potassium in $K_{2} O$ is $+ 1$

Oxidation number in $_{2}_{2}$

Hence, $O . N .$ of Potassium in $K_{2} O_{2}$ is $+ 1$

$O . N . in) + 1 K_{2}$

Hence, $O . N of K in K O_{2} is + 1)$

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Similar questions

Q.
The oxidation number of oxygen in

K_{2} O, K_{2} O_{2}

and

K O_{2}

are respecitvely :

Q. Oxidation number of potassium in

K_{2} O

K_{2} O_{2}

and

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, respectively, is:

The stability of $K_{2} O$ , $K_{2} O_{2}$ and $K O_{2}$ is in order $K_{2} O < K_{2} O_{2} < K O_{2}$ . The increasing stability at the size of metal ion increases is due to stabilization of:

Q. Out of

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Q. What is the oxidation number of oxygen in

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?
(Oxidation number of potassium is +1)

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Oxidation number of potassium in K2O,K2O2,KO2 respectively, are :

Oxidation number of potassium in $K_{2} O, K_{2} O_{2}, K O_{2}$ respectively, are :