Which of the following can form a super oxide very easily?

Sodium

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Potassium

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Caesium

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Lithium

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Solution

The correct option is A Caesium
The size of the atoms increases as we move down the group from lithium to caesium. Caesium cation has a large ionic size.

Similarly, the superoxide ion has a large ionic size. These ions form a stable lattice by efficient packing of ions.

Hence, caesium can form superoxide very easily.

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