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Oxides of Group 16

Which of the ...

Question

Which of the following forms a stable super oxide?

A

K

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B

L i

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C

C s

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D

N a

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Solution

The correct options are
A $K$
B $C s$
Lithium form oxide, sodium forms peroxide whereas $K, R b$ and $C s$ form superoxide. The superoxide formed is stable due to the large size of $K, R b$ and $C s$ .

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