Linked from
The 207 pages that link to Oxidation state, each with the reason it gives.
Nickel(II) chlorideRelated: The Roman numeral II identifies nickel’s +2 oxidation state.
Potassium sulfideRelated: The +1 and −2 oxidation states explain why the neutral formula is K₂S.
Selenic acidRelated: It identifies selenium as +6 in H₂SeO₄ and helps track its reduction.
Sulfur dichlorideRelated: Assigning chlorine −1 gives sulfur an oxidation state of +2 in SCl₂.