Why is the Size of Superoxide Larger than Peroxide?

[real]

why the size of superoxide is lager than preoxide??

 

[Astronuc]

See this for a brief discussion - http://en.wikipedia.org/wiki/Superoxide - but basically the superoxide radical O₂^- would produce a weaker bond than O₂^2-. On the other hand superoxide only reacts/bonds with one cation (KO₂), as opposed to two cations in the case of peroxide (e.g. H₂O₂).

 

[real]

thanks a lots

 

[real]

what is the meaning of this statement??
"On the other hand superoxide only reacts/bonds with one cation (KO2), as opposed to two cations in the case of peroxide (e.g. H2O2)."

 

[Astronuc]

The number of atoms would also determine the 'size' of a molecule, in addition to the bond 'lengths'. I was thinking of the original question - "why the size of superoxide is larger than peroxide".

 

[Plastic Photon]

what is the meaning of this statement??
"On the other hand superoxide only reacts/bonds with one cation (KO2), as opposed to two cations in the case of peroxide (e.g. H2O2)."

oxidation state of superoxide is -1/2, peroxide is -1. K and H are both +1 cations.

 

[real]

i see. I get your point, thanks~!