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In hydroysis, the alkali metal oxdes, pe...

In hydroysis, the alkali metal oxdes, peroxides and superoxides act as

A

Lewis base

B

Lewis acid

C

Bronsted acid

D

Bronsted base

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The correct Answer is:
D
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Lithium only forms monoxide when heated in oxygen. Sodium forms monoxide and peroxide in excess of oxygen. Other alkali metals form superoxide metals superoxide with oxygen i.e., MO_(2) . The abnormal behaviour of lithium is due to small size. The larger size of higher metals also decides the role in formation of superoxide. All the three anions abstract proton from water. The three anions are raleted to each other as follows: underset("oxide ion")(O^(2-)overset((1)/(2)O_(2))(to)underset("peroxide ion")(O_(2)^(2-))overset(O_(2))(to)underset("superoxide ion")(2O_(2)^(-)) Q. In hydrolysis, the alkali metals oxides, peroxide and superoxide act as:

The alkali metals

The alkali metals:

Alkali metals form peroxides and superoxides except

Alkali metals are

Alkali metals are

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