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: [[Transition Metal]]s can form several different [[Electrical Charge|charge]] [[ion]]s and these different [[Electrical Charge|charge]]s can determine the [[Physical Property|physical properties]] of the [[compound]]s they are in. Specifically this affects the [[colour]] of those [[compound]]s.
In [[compound]]s the [[Electrical Charge|charge]] of the [[Transition Metal]] [[ion]] is given in Roman Numerals after the name of the [[metal]]
*[[Copper (I) Sulphate]]: +1 [[Ion]] of [[Copper]] giving the [[compound]] a light green colour.*[[Copper (II) Sulphate]]: +2 [[Ion]] of [[Copper]] giving the [[compound]] a blue colour.*[[Manganese (II) Chloride]]: +2 [[Ion]] of [[Manganese]] giving the [[compound]] a pale pink colour.*[[Manganese (IV) Oxide]]: +4 [[Ion]] of [[Manganese]] giving it a very dark brown colour, often appearing black.*[[Iron (II) Sulphate]]: *2 [[Ion]] of [[Iron]] giving the [[compound]] a pale green colour.*[[Iron (III) Sulphate]]: *3 [[Ion]] of [[Iron]] giving the [[compound]] a redish-brown colour.
: Gem stones with various colours (red rubies, green emeralds, blue sapphires) get their colour from the [[Transition Metal]] [[ion]]s they contain.
*[[Platinum]]: Used in the production of [[Nitric Acid]].
*[[Manganese]]: Used in the form of [[Manganese Dioxide]] as a [[catalyst]] for the [[Decomposition Reaction|decomposition]] of [[Hydrogen Peroxide]].
===References===
====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 ''Transition metal, pages 48-9, GCSE Chemistry; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851346/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851346&linkCode=as2&tag=nrjc-21&linkId=3ac654f4b0da781c49c855a1af4c92ea ''Transition metals, pages 18-19, GCSE Chemistry, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d261 ''Transition metals, pages 23, 24, 25, GCSE Chemistry; The Revision Guide, CGP, AQA '']
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Transition metals, page 62, GCSE Chemistry; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Transition metals, pages 177, 178, GCSE Chemistry, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Transition metals, pages 96-97, GCSE Chemistry, Pearson, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Transition metals; chemical properties, page 97, GCSE Chemistry, Pearson, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Transition metals; physical properties, pages 96-97, GCSE Chemistry, Pearson, Edexcel '']
====OCR====
:[https://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 ''Transition metals, page 55, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Transition metals, pages 88, 140-141, Gateway GCSE Chemistry, Oxford, OCR '']