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==Key Stage 3==
===Meaning===
[[File:IodineSymbolIodineSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Iodine]].]]
[[Iodine]] is a [[Group 7]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 53.
===About Iodine===
: [[Iodine]] as 53 [[proton]]s and 74 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 53 and an [[Relative Atomic Mass|atomic mass]] of 127.
: An [[atom]] of [[Iodine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]].
====Properties====
: [[Iodine]] is a [[non-metal]] [[element]].
: [[Iodine]] is a purple [[solid]] at [[STP|room temperature]].
==Key Stage 4==
[[File:IKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Iodine]].]]
===Meaning===
[[Iodine]] is a [[Group 7]] [[element]], on the [[Periodic Table]], with 53 [[proton]]s in the [[Atomic Nucleus|nucleus]].
: The most [[Stable Isotope|stable isotope]] of [[Iodine]] has 74 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 127.
: An [[atom]] of [[Iodine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]].
: [[Iodine]] [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative ChargedCharge|negatively charged]].
====Properties====
: [[Iodine]] is a [[non-metal]] [[element]].
: [[Iodine]] kills [[bacteria]].
: [[Iodine]] is a brown coloured [[gas]] at [[STP|standard temperature and pressure]].
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Iodine, page 102, GCSE Physics; Third Edition, Oxford University Press, 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 ''Iodine, 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 ''Iodine, page 61, GCSE Combined Science Trilogy; Chemistry, CGP, AQA '']