1. Molecule
| Syntax | Display | Description |
|---|---|---|
\ce{Fe(OH)2} | \(\ce{Fe(OH)2}\) | ferrous hydroxide |
\ce{CaCO3} | \(\ce{CaCO3}\) | calcium carbonate |
\ce{(NH4)2S} | \(\ce{(NH4)2S}\) | ammonium sulfide |
\ce{Sb2O3} | \(\ce{Sb2O3}\) | antimony trioxide |
\ce{H2O} | \(\ce{H2O}\) | water |
2, ion
| Syntax | Display | Description |
|---|---|---|
\ce{H+} | \(\ce{H+}\) | hydrogen ion |
\ce{NO3-} | \(\ce{NO3-}\) | nitrate |
\ce{Ca2+} | \(\ce{Ca2+}\) | Calcium ion (wrong spelling) |
\ce{Ca^2+} | \(\ce{Ca^2+}\) | Calcium ion (correct spelling) |
\ce{NH4+} | \(\ce{NH4+}\) | ammonium |
\ce{CrO4^2} | \(\ce{SO4^2-}\) | Sulfate |
\ce{CrO4^2-} | \(\ce{CrO4^2-}\) | hexavalent chromate |
Note: If the charge number is greater than 1, you need to use ^ to specify it as a superscript, otherwise it will display the above error demonstration.
In addition, in chemical formulas and equations in LaTeX, spaces around symbols are very important.
For example: H + ... means hydrogen atom plus ..., H+ + ... means hydrogen ion plus ....
3, math and fonts
You can use $...$ in chemical formulas to add mathematical formulas.
In addition to chemical formulas, other letters, such as coefficients, indicating cis-trans isomerism, etc., must be written in italics.
| Syntax | Display | Description |
|---|---|---|
\ce{xH2O} | \(\ce{xH2O}\) | (wrong spelling) |
\ce{$x$H2O} | \(\ce{$x$H2O}\) | (Correct spelling) |
\ce{{C_$x$H_$y$} + \ce{{$z$O2} - \ce{{$x$CO2} + \ce{{$\frac{y}{2}$ H2O}} | \(\ce{C_$x$H_$y$} + \ce{$z$O2} - \ce{$x$CO2} + \ce{$\frac{y}{2 }$H2O}\) | Example with parameter equation |
Cis-trans isomerism: Take cis-2-butene as an example, represented by \ce{$cis${-}CH3CH=CHCH3}, the final rendering is: \(\ce{$cis${-}CH3CH =CHCH3}\)
4, valence and description
You can use \overset{superscript}{text} to indicate valence, and \underset{subscript}{text} to indicate description.
| Syntax | Display | Description |
|---|---|---|
\ce{\overset{+2}{Fe}\overset{+3}{Fe}_2O4} | \(\ce{\overset{+2}{Fe}\overset{+3}{Fe }_2O4}\) | Ferric oxide |
\ce{Ca\overset{-1}{H}_2} | \(\ce{Ca\overset{-1}{H}_2}\) | calcium hydride |
\underset{\text{glucose}}{\ce{C6H12O6}} | \(\underset{\text{glucose}}{\ce{C6H12O6}}\) | glucose |
By convention, valences should be indicated in LaTeX using Roman numerals in the upper right corner. E.g:Syntax Display Description \ce{Fe^{II}}\(\ce{Fe^{II}}\) ferrous iron \ce{Pb^{IV}}\(\ce{Pb^{IV}}\) quaternary lead
5, isotope
It is recommended to use ^ and _ to represent subscripts and subscripts more clearly.
| Syntax | Display | Description |
|---|---|---|
\ce{^{227}_{90}Th+} | \(\ce{^{227}_{90}Th+}\) | Thorium |
\ce{^0_{-1}n-} | \(\ce{^0_{-1}n-}\) | Other examples |
6. State of matter
Just like handwriting, brackets + abbreviations are enough.
| Syntax | Display | Description |
|---|---|---|
\ce{H2_{(aq)} | \(\ce{H2_{(aq)}}\) | hydrogen solution (assumed to be represented by subscript) |
\ce{CO3^{2-}(aq)} | \(\ce{CO3^{2-}(aq)}\) | carbonate solution |
\ce{CaCO3(s)} | \(\ce{CaCO3(s)}\) | Calcium carbonate solid |
\ce{H2O(g)} | \(\ce{H2O(g)}\) | Gaseous water |
Thanks
refer to:
Rolling Sky Wiki
https://rs.miraheze.org/wiki/Help:Chemistry
LaTex (5) Basic Chemical Grammar
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