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===Meaning===
A '''dot and cross diagram''' is a [[diagram]] used to show how [[electron]]s from the [[Outer Shell|outer shells]] of [[atom]]s are shared or transferred in a [[Chemical Bond|chemical bond]].
===About Dot and Cross Diagrams===
: '''Dot and cross diagrams''' can be used to represent [[Covalent Bond|covalent bonds]] and [[Ionic Bond|ionic bonds]].
===Examples===
{| class="wikitable"
|+ Covalent Bonds
|-
|[[File:OxygenDotandCrossDiagram.png|center|175px]]
|[[File:NitrogenDotandCrossDiagram.png|center|175px]]
|[[File:CarbonDioxideDotandCrossDiagram.png|center|250px]]
|-
| style="height:20px; width:175px; text-align:center;" |The two [[Oxygen]] [[atom]]s each share two of their [[electron]]s with one another.
| style="height:20px; width:175px; text-align:center;" |The two [[Nitrogen]] [[atom]]s each share three of their [[electron]]s with one another.
| style="height:20px; width:250px; text-align:center;" |Each [[Oxygen]] shares two of its [[electron]]s with the [[Carbon]] [[atom]] while the [[Carbon]] [[atom]] shares two [[electron]]s with each [[Oxygen]] [[atom]].
|}
{| class="wikitable"
|+ Ionic Bonds
|-
|[[File:LithiumFluorideDotandCrossDiagram.png|center|200px]]
|[[File:MagnesiumOxideDotandCrossDiagram.png|center|200px]]
|[[File:BerylliumFluorideDotandCrossDiagram.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |The [[Lithium]] [[atom]] donates an [[electron]] from its [[Outer Shell|outer shell]] to the [[Outer Shell|outer shell]] of the [[Fluorine]] [[atom]].
| style="height:20px; width:200px; text-align:center;" |The [[Magnesium]] [[atom]] donates two [[electron]]s from its [[Outer Shell|outer shell]] to the [[Outer Shell|outer shell]] of the [[Oxygen]] [[atom]].
| style="height:20px; width:200px; text-align:center;" |The [[Beryllium]] [[atom]] donates two [[electron]]s from its [[Outer Shell|outer shell]] to the [[Outer Shell|outer shells]] of each [[Fluorine]] [[atom]].
|}
===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 ''Dot and cross diagram, pages 43, 60-1, 64-5, 133-5, GCSE Chemistry; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09861 ''Dot and cross diagrams, pages 114, 116, 117, GCSE Combined Science; The Revision Guide, CGP, 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=9e29fad914244909903e5e93f8a01d106 ''Dot and cross diagrams, pages 29, 31, 32, GCSE Chemistry; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Dot and cross diagrams, pages 39, 44-45, GCSE Chemistry; Third Edition, Oxford University Press, 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 ''Dot and cross diagrams, pages 72-76, 78, 79, 81-83, GCSE Combined Science Trilogy; Chemistry, CGP, 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 ''Dot and cross diagrams, pages 74-78, 80, 81, 83-85, GCSE Chemistry, CGP, AQA '']
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Dot and cross diagrams, page 184, GCSE Combined Science, 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 ''Dot and cross diagrams, page 40, GCSE Chemistry, Pearson, 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 ''Dot and cross diagrams, pages 21, 23, 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 ''Dot and cross diagrams, pages 51-53, 56, 58-60, GCSE Chemistry, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Dot and cross diagrams, pages 84, 86, GCSE Combined Science; The Revision Guide, CGP, 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 ''Dot and cross diagrams, pages 19, 20, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Dot and cross diagrams, pages 90, 92, Gateway GCSE Combined Science; 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 ''Dot-and-cross diagrams, pages 57, 58, 60, Gateway GCSE Chemistry, Oxford, OCR '']