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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>