Using Stock notation, represent the following compounds :HAuCl4, Tl2O, FeO, Fe2O3, CuI, CuO, MnO and MnO2 ?

By applying various rules of calculating the oxidation number of the desired element in a compound, the oxidation number of each metallic element in its compound is as follows:


HAuCl4 → Au has 3
Tl2O → Tl has 1
FeO → Fe has 2
Fe2O3 → Fe has 3
CuI → Cu has 1
CuO → Cu has 2
MnO → Mn has 2
MnO2 → Mn has 4
Therefore, these compounds may be represented as: HAu(III)Cl4, Tl2(I)O, Fe(II)O, Fe2(III)O3, Cu(I)I, Cu(II)O, Mn(II)O, Mn(IV)O2

Dear Students

By using stock notation, these compounds are represented as :
HAu(III)Cl₄
Tl₂(I)O
Fe(II)O
Fe₂(III)O₃
Cu(I)I
Cu(II)O
Mn(II)O
Mn(IV)O₂

I hope this answer will help you.
Thanks & Regards
Yash Chourasiya