Chemistry alevel
| Front | Formulae of ions: Iron (III) ion |
| Back | Fe^3+ |
| Front | A _ -block element has its highest electron in an _ orbital |
| Back | A d-block element has its highest electron in a d orbital |
| Front | % by mass of an element in a compound |
| Back | Ar of element x number of atoms of element in formula /divided by/ Mr of compound |