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Which of the following compounds are par...

Which of the following compounds are paramagnetic in nature ?

A

`KO_(2)`

B

`K_(2)O_(2)`

C

`Na_(2)O_(2)`

D

`RbO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A, D
The compounds containing superoxide ion `(O_(2)^(ɵ))` are paramegnetic and coloured, due to the presence of one unpaired electron. They have three electron bond, as shown:

`KO_(2)` and `RbO_(2)` are superoxides.
`KO_(2) rarr K^(o+) + O_(2)^(ɵ)`
`RbO_(2) rarr Rb^(o+) + O_(2)^(ɵ)`
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