19,879
edits
Changes
no edit summary
|-
|[[File:PeriodicTable.png|center|900px]]
|}
===Groups===
: The [[element]]s are arranged [[group]]s of similar [[Chemical Properties]].
: [[Element]]s have similar [[Chemical Properties]] when they have the same number of [[electron]]s in the [[Outer Shell]].
{| class="wikitable"
|-
|[[File:PeriodicTableGroups.png|center|600px]]
|}
===Periods===
: The [[period]]s are arranged by the number of [[Electron Shell]]s.
{| class="wikitable"
|-
|[[File:PeriodicTablePeriods.png|center|600px]]
|}