Draft:Chemistry notation
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Chemistry notation or chemical notation refers to the notation system of symbols, formulas, and equations used to represent atoms, chemical elements, molecules, compounds, reactions, and chemical structures in written and visual form.[1]
Written notation
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Chemistry elements use subscript and superscripts before elements for reference to how many protons and neutron are in the nucleus. The subscript after the element refers to how many of that element is in the molecule, and the superscript after the element is referencing how many electrons there are relative to how many protons are in the nucleus.[2]
Na+ → Sodium ion (lost 1 electron)
O2− → Oxide ion (gained 2 electrons)
Parentheses
[edit]Parentheses or brackets in chemistry notation represent the distributive property to multiply the elements in parentheses by the subscript that follows.
PtCl2(NH3)2 is 1 Platinum, 2 Chlorine, and 6 Nihonium make up Cisplatin.
(C5H7)2(ClNO)2PS is the same as C10H14Cl2NO2PS to represent zytron.
Coefficients
[edit]Coefficients are used in front of chemical formula to show how many molecules are represented. It is often used in balancing equations.
There are 2 Iron, 3 Sulfur, 18 Oxygen, 6 Potassium, and 6 Hydrogen on each side of the balanced equation, with the 6, 3, and 2 being the coefficients.
Structural notation
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Structural notation is a 2D way to show chemical structures using symbols. Molecular editors can be used to help draw these diagrams, or TeX extensions such as chemfig or XyMTeX can generate 2D computational chemistry notation.[3]
See also
[edit]- Comparison of TeX editors
- Computational chemistry
- List of chemical elements
- Lists of molecules
- List of molecular graphics systems
- List of TeX extensions - mhchem, XyMTeX, chemfig.
- Mathematical notation
- Molecular design software
- Molecular geometry
- Molecular graphics
- Molecule editor
- Overleaf - open-source web app that does chemistry notation and chemical structures
- Periodic table
References
[edit]- ^ "1.7: Structural Formulas". Chemistry LibreTexts. July 10, 2014.
- ^ "Chemical notation". xaktly.com.
- ^ Lyons, Kate. "LibGuides: CHE 120 - Introduction to Organic Chemistry - Textbook: Chapter 1 - Organic Chemistry Review / Hydrocarbons". guides.hostos.cuny.edu.
[[Category:Chemical formulas]] [[Category:Chemical structures]] [[Category:Molecules| ]] [[Category:Chemistry]] [[Category:Notation]]