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====Balancing Equations with Ions====
If the [[Electrical Charge|charge]] on an [[ion]] is known, this information can be used to find the [[Chemical Formula|chemical formula]] of an [[Ionic Compound|ionic compound]] and be used to '''balance''' a '''symbol equation'''.
: [[Group 1]] [[Element]]s all form +1 [[ion]]s; Li<sup>+1</sup>, Na<sup>+1</sup>, K<sup>+1</sup>
: [[Group 2]] [[Element]]s all form +2 [[ion]]s; Be<sup>+2</sup>, Mg<sup>+2</sup>, Ca<sup>+2</sup>
| style="height:20px; width:200px; text-align:center;" |Since [[Group 1]] forms +1 [[ion]]s and [[Group 5]] forms -3 [[ion]]s there will be 3 [[Group 1]] [[ion]]s for each [[Group 5]] [[ion]].
| style="height:20px; width:200px; text-align:center;" |Since [[Group 3]] forms +3 [[ion]]s and [[Group 6]] forms -2 [[ion]]s there will be 2 [[Group 3]] [[ion]]s for every 3 [[Group 6]] [[ion]]s.
| style="height:20px; width:200px; text-align:center;" |[[Sulphate]] [[ion]]s and [[Carbonate]] [[ion]]s both have a [[Electrical Charge|charge]] of -2 while [[Group 2]] [[ion]]s have a [[Electrical Charge|charge]] of +2 so there will be 1 [[Sulphate]] or [[Carbonate]] for every 1 [[Group 2]] [[ion]].
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