Formula:Chem/doc

This template allows you to render chemical formulas using HTML. Alternatively, you can use <chem>...</chem>, using mhchem LaTeX notation to generate formulas.

Template instructions

This template, Formula:Fn, serves to simplify the writing of chemical formulas. For example,

{{chem|H|2|O}}

will yield:

Formula:Chem

Algebraic expression as subscript

Algebraic expressions are rendered as subscripts (but must not contain upper case letters).

{{chem|C|''n''|H|2''n'' + 2}}

gives

Formula:Chem

Charge

Ion charge superscripts (for: +/-) are also supported:

{{chem|H|3|O|+}}

yields a "+" as superscript:

Formula:Chem

Simultaneous subscripts/superscripts are automatically handled (use a hyphen for the minus sign):

{{chem|SO|4|2-}}

gives "2−" as superscript:

Formula:Chem

The hyphen is converted to a true minus sign.

Atomic number and mass number

The first parameter can be used for mass number.

{{chem|4|He}}

gives:

Formula:Chem

The first two parameters can be used for mass number and atomic number.

{{chem|4|2|He}}

gives:

Formula:Chem

Note

Only the first two parameters can handle two consecutive plain numbers (i.e. without a plus sign or a hyphen (+ or -) following). Otherwise the template will loop. The Chem2 template can be used for e.g. Formula:Chem2, heavy water.

See also Formula:Fn

Linking

The optional parameter link changes the formula into a link. For example:

{{chem|nexus=aqua|H|2|O}}

will yield:

Formula:Chem

Individual elements can be linked in the following manner:

{{chem|[[Hydrogenium|H]]|2|[[Oxygenium|O]]}}

gives

Formula:Chem

Notes

• To include "=" in the formula, use "=" For example, {{chem|CH|2|=CH|2}} yields Formula:Chem.
  • Or, don't use this template. For example, CH<sub>2</sub>=CH<sub>2</sub> yields CH₂=CH₂.
• To include "≡" in the formula, use "≡" For example, {{chem|HC≡CH}} yields Formula:Chem.
• The template accepts up to twenty parameters in addition to link.
• This template uses Formula:Fn.

De formula adhibenda

<templatedata>{ "params": { "1": {}, "2": {}, "3": {}, "4": {}, "5": {}, "6": {}, "7": {}, "8": {}, "9": {}, "10": {}, "11": {}, "12": {}, "13": {}, "14": {}, "15": {}, "16": {}, "17": {}, "18": {}, "19": {}, "20": {}, "21": {}, "22": {}, "23": {}, "24": {}, "link": { "label": "Link", "description": "Make the formula link to an article", "example": "Water", "type": "wiki-page-name" } }, "description": "Render chemical formulas using HTML. Alternatively, you can use $\dots$, using mhchem LaTeX notation to generate formulas.\n\nUp to 25 unnamed ordered parameters can be used with automatic detection of subscripts and superscripts.", "format": "inline", "paramOrder": [ "link", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24" ] }</templatedata>

Subformulae

• Formula:Fn
• Formula:Fn

Vide quoque

• Categoria:Formulae chemicae