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====Reactivity along Period 2====
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|[[File:Period2ElectronShells.png|center|600px]]
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|[[File:Period2ElectronShielding.png|center|600px]]
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| style="height:20px; width:600px; text-align:left;" |For the first 3 [[element]]s [[Lithium]], [[Beryllium]] and [[Boron]] all lose [[electron]]s in [[Chemical Reaction|chemical reactions]].
The [[reactivity]] decreases as you go across the [[Period (Chemistry)|period]]:
*The outer [[electron]]s all roughly the same distance away from the [[Atomic Nucleus|nucleus]]
*The [[charge]] on the [[Atomic Nucleus|atomic nucleus]] increases as you move go across the [[period]].
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