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Basic Oxides of Metals

In the reacti...

Question

In the reaction $M$ + $O_{2}$ $\to$ $M O_{2}$ (super oxide) the metal is:

A

Li

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B

Na

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C

K

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D

Ba

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Solution

The correct option is C
K

Metals react with oxygen on heating or without heating to form metallic oxides.

Metals like sodium, aluminum, iron, lead, ets. react with oxygen to produce their oxides.

Only K can form superoxide $K O_{2}$ .

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