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[[Fluorine]] is a yellow [[gas]].
==Key Stage 3==
[[File:FKS3.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Fluorine]].]]
[[File:F-19_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Fluorine]] [[atom]] with 9 [[proton]]s and 10 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 9 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[Fluorine]] is a [[Group 7]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 9.
===About Fluorine===
====Molecular Structure====
: [[Fluorine]] has the [[Chemical Formula|chemical formula]] [[Fluorine| F<sub>2</sub>]].
====Atomic Structure====
: [[Fluorine]] as 9 [[proton]]s and 10 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 9 and an [[Relative Atomic Mass|atomic mass]] of 19.
: An [[atom]] of [[Fluorine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]].
====Properties====
: [[Fluorine]] is a [[non-metal]] [[element]].
: [[Fluorine]] is the most [[Reactivity|reactive]] [[Halogen]].
: [[Fluorine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen Fluoride]] which [[dissolve]]s in [[water]] to produce [[Hydrofluoric Acid]].
: [[Fluorine]] kills [[bacteria]].
: [[Fluorine]] is a yellow coloured [[gas]] at [[STP|room temperature]].
==Key Stage 4==
[[File:FKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Fluorine]].]]
[[File:F-19_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Fluorine]]-19 [[isotope]] with 9 [[proton]]s and 10 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s in the first [[Electron Orbital|shell]] and 7 in the [[Outer Shell|outer shell]].]]
===Meaning===
[[Fluorine]] is a [[Group 27]] [[element]], on the [[Periodic Table]], with 9 [[proton]]s in the [[Atomic Nucleus|nucleus]].
===About Fluorine===
====Molecular Structure====
: [[Fluorine]] has the [[Chemical Formula|chemical formula]] [[Fluorine|F<sub>2</sub>]].
: [[Fluorine]] [[atom]]s join together in a [[Covalent Bond|covalent bond]].
{| class="wikitable"
|-
|[[File:FluorineDotandCrossDiagram.png|center|400px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[Dot and Cross Diagram|dot and cross diagram]] of a [[Fluorine]] [[molecule]].
|}
====Atomic Structure====
: The most [[Stable Isotope|stable isotope]] of [[Fluorine]] has 10 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 19.
: An [[atom]] of [[Fluorine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]].
: '''Fluoride''' [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative Charge|negatively charged]].
{| class="wikitable"
|-
|[[File:FluorineIonFormation.png|center|400px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[diagram]] showing the formation of a '''Fluoride''' [[ion]].
|}
====Properties====
: [[Fluorine]] is a [[non-metal]] [[element]].
: [[Fluorine]] is the most [[Reactivity|reactive]] [[Halogen]].
: [[Fluorine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen Fluoride]] which [[dissolve]]s in [[water]] to produce [[Hydrofluoric Acid]].
: [[Fluorine]] kills [[bacteria]].
: [[Fluorine]] is a yellow coloured [[gas]] at [[STP|standard temperature and pressure]].
#Collect the [[gas]] in a [[Test Tube|test tube]].
#Place a piece of [[Litmus Paper|litmus paper]] over the mouth of the [[Test Tube|test tube]].
#If the [[Litmus Paper|litmus paper]] is [[bleach]]ed white then the [[gas]] is [[Fluorine]] or [[Chlorine]].
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Fluorine, page 61, GCSE Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294639X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294639X&linkCode=as2&tag=nrjc-21&linkId=51599bb45a2bfaf7c1b6a978b2ca2616 ''Fluorine, page 61, GCSE Combined Science Trilogy; Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Fluorine, pages 26, 44-5, 61, GCSE Chemistry; Student Book, Collins, AQA '']