[[Argon]] is a [[gas]].
==Key Stage 3==
[[File:ArgonSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Argon]].]]
[[File:Ar-40_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Argon]] [[atom]] with 18 [[proton]]s and 22 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 18 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[File:ArgonSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Argon]].]]
[[Argon]] is a [[Group 0]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 18.
===About Argon===
==Key Stage 4==
[[File:ArKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Argon]].]]
[[File:Ar-40_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Argon]]-40 [[isotope]] with 18 [[proton]]s and 22 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s in the first [[Electron Orbital|shell]], 8 in the second and 8 in the [[Outer Shell|outer shell]].]]
===Meaning===
[[Argon]] is a [[Group 0]] [[element]], on the [[Periodic Table]], with 18 [[proton]]s in the [[Atomic Nucleus|nucleus]].
: An [[atom]] of [[Argon]] has a full [[Outer Shell|outer shell]] of 8 [[electron]]s so it is [[inert]].
{| class="wikitable"==References=======AQA====|[:[Filehttps://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Argon.png|center|200px], page 59, GCSE Physics; Student Book, Collins, AQA']|:[[Filehttps:ArgonSymbol//www.amazon.co.png|center|200px]uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Argon, pages 40-1, 58, 294-5, GCSE Chemistry; Student Book, Collins, AQA']|-| style="height===OCR==== :20px; width[https:200px; text//www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-align:center21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Ar, page 104, Gateway GCSE Combined Science;" colspan = "2"|[[ArgonThe Revision Guide, CGP, OCR '']] always has 18 :[[proton]]shttps://www.amazon.co. uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Ar, pages 15, 16, 31, 38, GCSE Chemistry; The most [[Stable Isotope|stable]Revision Guide, CGP, OCR Gateway ''] [[isotope]] has 22 [[neutron]]s.|}