What is the Oxidation Number of Pb in Pb(O)2?

[ThatDude]

Homework Statement

The problem is:

Find the oxidation number of each element in the compound: Pb(O)2

I said oxidation number of Pb = x, O = -1 since this is a peroxide, therefore oxidation number of Pb is plus 2. However, the solution manual says O is -2 and thus Pb is 2.

But elsewhere, for the problem BaO2, they say the oxidation number of O is -1 and Ba is +2.

I'm confused.

Homework Equations

The Attempt at a Solution

 

[Borek]

PbO₂ is not a peroxide.

 

[epenguin]

Not clear whether it is the manual or you who is saying Pb in PbO₂ is +2 but now hopefully not.

I have a vague recollection that lead dioxide did sometimes get improperly and misleadingly called "lead peroxide",
probably before chemical nomenclature was formalised and the name still hangs around.

 

[James Pelezo]

Borek is 100% right, it ain't a peroxide ... Hint: Oxy = -2, Calculate oxidation state of Pb.