Using Stock notation, represent the following compounds : `HAuCl_(4), TI_(2)O, FeO, Fe_(2)O_(3), CuI, CuO, MnO and MnO_(2)`.

Explanation

By applying various rules of calculating the oxidation number of the desired element in a compound, the oxidation number of each metallic element I its compound is as follows :
`{:(HAuCl_(4),rarr,"Au has 3"),(TI_(2)O,rarr,"TI has 1"),(FeO,rarr,"Fe has 2"),(Fe_(2)O_(3),rarr,"Fe has 3"),(CuI,rarr,"Cu has 1"),(CuO,rarr,"Cu has 2"),(MnO,rarr,"Mn has 2"),(MnO_(2),rarr,"Mn has 4"):}`
Therefore, these compounds may be represented as :
`HAu(III) Cl_(4), Tl_(2)(I)O, Fe(II)O, Fe_(2)(III)O_(3), Cu(I)I, Cu(II)O, Mn(II)O, Mn(IV)O_(2)`