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===About Metal Ions===
: '''Metal ions''' are formed when [[metal]] [[element]]s lose their [[electron]]s to form [[Positive Ion|positive ions]].
The [[Electrical Charge|charge]] on a '''metal ion''' may be determined by the [[Group]].
*[[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>
*[[Group 3]] [[Element]]s all form +3 [[ion]]s; Al<sup>+3</sup>
[[Transition Metal]] [[Element]]s can form different [[ion]]s which are shown by Roman Numerals; [[Roman NumeralIron]]s; Iron can form [[Iron|Fe]](II) ]] which is [[Iron|Fe]]<sup>+2</sup> ]] or [[Iron|Fe]](III) ]] is [[Iron|Fe]]<sup>+3</sup>]],[[Manganese ]] can form [[Manganese|Mn]](II) ]] which is [[Manganese|Mn]]<sup>+2</sup> ]] or [[Manganese|Mn]](IV) ]] which is [[Manganese|Mn]]<sup>+4</sup>]].
: The more easily a [[metal]] [[element]] can become a '''metal ion''' the more [[reactivity|reactive]] the [[metal]].
| style="height:20px; width:200px; text-align:center;" |[[Aluminium]] forms +3 [[ion]]s.
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d255 ''Metal ions, pages 89, 90, GCSE Chemistry; The Revision Guide, CGP, AQA '']
====OCR====
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Metal ions, pages 56-57, 88, Gateway GCSE Chemistry, Oxford, OCR '']