Out of the elements marked A, B, C, D, E, F, G and H which form superoxides?

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Solution

The correct options are
A C
C D
G G
Down the group super oxide stability of alkali and alkaline earth metals increases.So elements C,D, and G forms superoxides.As the size of metal increases ability of formation of superoxide increases.
Hence option C,D and G are correct.

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Out of the elements marked A, B, C, D, E, F, G and H which form superoxides?

The correct options are A C C D G GDown the group super oxide stability of alkali and alkaline earth metals increases.So elements C,D, and G forms superoxides.As the size of metal increases ability of formation of superoxide increases.Hence option C,D and G are correct.

The correct options are
A C
C D
G G
Down the group super oxide stability of alkali and alkaline earth metals increases.So elements C,D, and G forms superoxides.As the size of metal increases ability of formation of superoxide increases.
Hence option C,D and G are correct.