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Systematic element name
In chemistry, heavy transuranic elements receive a permanent trivial name and symbol only after their synthesis has been confirmed. This has been a protracted and highly political process in some cases (see element naming controversy). In order to discuss newly synthesized and as-yet unsynthesized elements without ambiguity, the IUPAC assigns a temporary systematic name and symbol to such elements. The origin of this idea came from the successful development of regular rules for the naming of organic compounds.
The IUPAC rules
The temporary names are derived systematically from the element's atomic number. Each digit is translated to a 'numerical root', according to the table to the right. The roots are concatenated, and the name is completed with the ending -ium. Some of the roots are Latin and others are Greek; the reason is to avoid two digits starting with the same letter. There are two sandhi rules designed to prevent odd-looking names.
The systematic symbol is formed by taking the first letter of each root, converting the first to a capital.
All elements up to and including atomic number 111 have received permanent trivial names and symbols, so the use of systematic names and symbols is recommended only for elements 112 and above. Therefore in practice, systematic names are just those with 3-letter symbols.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Systematic_element_name". A list of authors is available in Wikipedia.|