The Chemical symbol reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Chemical symbol

A chemical symbol is an abbreviation or short representation of the name of a chemical element. Natural elements all have symbols of one or two letters; some man-made elements have temporary symbols of three letters.

Chemical symbols are listed in the periodic table and are used as shorthand and in chemical equations, e.g., 2 H₂ + O₂ → 2 H₂O

Because chemical symbols are often derived from the Latin or Greek name of the element, they may not bear much resemblance to the common English name, e.g., Na for sodium (Latin natrium) and Au for gold (Latin aurum).

In China, each chemical element is assigned an ideograph as its symbol; most of them have been explicitly created for this purpose (see Chinese characters for chemical elements).

For complete listings of the chemical elements and their symbols, see:

• List of elements by symbol
• List of elements by name
• List of elements by number

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