PtO2
Nitrogen dioxide NO2 Nitrogen(IV) oxide
SO2
It is SnO2Why? Because:Tin has a charge of 4 and Oxygen has a charge of 2. Their charges are switched to make a compound; therefore, the chemical formula would be written as Sn2O4. Then, you have to simplify that so it would be written as SnO2.
Pt3(PO4)4
The IV in lead IV oxide means that the lead ion has a 4+ charge. The oxide ion has a 2- charge. The charges must cancel out to zero, so there are 2 oxide ions for every 1 lead IV ion, which is what the formula PbO2 shows.
The chemical formula for tin(IV) oxide is SnO2. Tin(III) oxide doesn't exist.
The chemical formula for tin(IV) oxide is SnO2. Tin(III) oxide doesn't exist.
Nitrogen(IV) oxide is N2O4.
PbO2
Lead(IV) oxide would have the formula PbO2
Nitrogen dioxide NO2 Nitrogen(IV) oxide
SnO2, if you meant (tin(IV) oxide) or tin dioxide that is
Platinum(IV) nitride has the chemical formula Pt3N4.
SO2
The chemical name of PtO2 is platinum oxide.
Nitrogen(IV) oxide is N2O4.
Lead has Three type of oxides: Lead(II) Oxide = PbO (Generally referred) Lead(IV) Oxide = PbO2 Lead(II,IV) Oxide = Pb3O4