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 in its compound is as follows :
`{:(HAuCl_(4)to "Au has 3"),(Tl_(2)O to "Tl has 1"),(FeO to "Fe has 2"),(Fe_(2)O_(3) to "Fe has 3"),("Cul " to " Cu has 1"),(CuO to "cu has 2"),(MnO to "Mn has 2"),(MnO_(2) to "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)l,Cu(II)O,Mn(II)O,Mn(IV)O_(2).`