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Preparations and Reactions of Sodium Oxide

The oxidation...

Question

The oxidation state of potassium in $K_{2} O$ is_________.

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Solution

The correct option is A 1
Alkali metals always show $+ 1$ oxidation sates in their compounds whereas oxygen can show various oxidation states. In $K_{2} O$ the oxidation state shown by $K$ is $+ 1$ while $O$ shows $- 2$ .

$(+ 1) x_{2} + (- 2) x_{1} = 0$ [Since molecule is electrically neutral]

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