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[[Chlorine]] is a pale green [[gas]].
==Key Stage 3==
[[File:ChlorineSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Chlorine]].]]
[[File:Chlorine2dWK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Chlorine]] [[atom]] with 17 [[proton]]s and 18 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 17 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[Chlorine]] is a [[Group 7]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 17.
===About Chlorine===