Question

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

• A. E and G
• B. C, E and G
• C. A and D
• D. G and B

Answer 1

Answer: (A)

E and G

As we move from top to bottom in a group the tendency of formation of superoxides will be increased due to an increase in the atomic size of the elements
As we move from left to right in a period the tendency of formation of superoxides will be decreased due to a decrease in the atomic size of the elements.
So elements E and G forms super oxides.
Hence option A is correct.