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Which fo the follwing compounds fo oxyge...

Which fo the follwing compounds fo oxygen has fractional oxdation number ?

A

`CaO`

B

`OF_2`

C

`RbO_2`

D

`Na_2O_2`

Text Solution

Verified by Experts

The correct Answer is:
C
Oxygen has an oxidation number of `-1//2` is superoxides (such as `RbO_2`) which contain the superoxide ion `(O_2^(-))`. Oxidation number is a formal concept adopted for our convenience. The numbers are determined by relying on rules. These rules can result in a fractional oxidation number . This does not mean that electronic charges are split .
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