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Standard XII

Chemistry

Preparation and Properties of Potassium Oxide

Oxidation num...

Question

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

+ 2

+ 1

and

+ \frac{1}{2}

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+ 1

+ 4

and

+ 2

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+ 1

+ 1

and

+ 1

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+ 1

+ 2

and

+ 4

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Solution

The correct option is C $+ 1$ , $+ 1$ and $+ 1$
Alkali metals always possess +1 oxidation state, whereas oxidation state for oxygen present in $K_{2} O$ (oxide) is -2, and in $K_{2} O_{2}$ (peroxide) is -1 and in $K O_{2}$ (superoxide) is $- \frac{1}{2}$ .

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Similar questions

Q. Oxidation number of potassium in

K_{2} O

K_{2} O_{2}

and

K O_{2}

, respectively, is:

Q.
The oxidation number of oxygen in

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

and

K O_{2}

are respecitvely :

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. What is the oxidation number of oxygen in

K_{2} O

?
(Oxidation number of potassium is +1)

Q. The oxidation state of potassium in

K_{2} O

is_________.

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Oxidation number of potassium in K2O, K2O2 and KO2, respectively, is:

The correct option is C +1, +1 and +1Alkali metals always possess +1 oxidation state, whereas oxidation state for oxygen present in K2O (oxide) is -2, and in K2O2 (peroxide) is -1 and in KO2 (superoxide) is −12.

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

The correct option is C $+ 1$ , $+ 1$ and $+ 1$
Alkali metals always possess +1 oxidation state, whereas oxidation state for oxygen present in $K_{2} O$ (oxide) is -2, and in $K_{2} O_{2}$ (peroxide) is -1 and in $K O_{2}$ (superoxide) is $- \frac{1}{2}$ .