19,879
edits
Changes
→Balancing Equations with Ions
: [[Group 7]] [[Element]]s all form -1 [[ion]]s; F<sup>-1</sup>, Cl<sup>-1</sup>
: Some [[Simple Covalent Molecule|covalent]] [[compound]]s can form [[Negative Ion|negative ions]]; [[Carbonate]] forms -2 [[ion]]s CO<Sub>3</sub><sup>-2</sup>
[[Sulphate]] forms -2 [[ion]]s SO<Sub>4</sub><sup>-2</sup>