Molecular Ion Revision cards

- NH4⁺

- Only positive polyatomic ion

- OH^-

- NO₃^-

- NO₂^-

- HCO₃^-

- MnO₄^-

- ClO₃^-

- ClO^-

- Memorise "ate" form

- 1 more "O" is "per...ate"

- 1 less "O" is "ite"

- 2 less is "hypo...ite"

- CO₃^2-

- SO₄^2-

- SO₃^2-

- Cr₂O₇^2-

- CO₂^2-

- SO₅^2-

- SO₂^2-

- C₂O₄^2-

- SiO₃^2-

- Increases charge by 1

- Named as "Hydrogen-" or "Bi"

- PO₄^3-

- PO₃^3-

- PO₂^3-

- Silver and Zinc are in variable charge territory, but their charges are fixed

- Aluminium is in fixed territory but it is included to make it easier to remember

- Ag¹⁺, Zn²⁺, Al³⁺

- Start at Silver, go diagonally and to the right and the charge increases by 1 each time