Poor metals (or Other Metals)
The trivial name poor metals is sometimes applied to the metallic elements in the p-block of the periodic table. Their melting and boiling points are generally lower than those of the transition metals and their electronegativity higher, and they are also softer. They are distinguished from the metalloids by their significantly higher boiling points and conductivity in the same row.
“Poor metals” is not a rigorous IUPAC-approved nomenclature, but the grouping is generally taken to include aluminium, gallium, indium, tin, thallium, lead and bismuth. Occasionally germanium, antimony and polonium are also included, although these are usually considered to be metalloids or “semi-metals”. Elements 113, 114, 115, and 116, which are currently allocated the systematic names ununtrium, ununquadium, ununpentium, and ununhexium, would likely exhibit properties characteristic of poor metals; sufficient quantities of them have not yet been synthesized to examine their chemical properties.
| 13 | 14 | 15 | 16 |
|---|---|---|---|
| Al | |||
| Ga | Ge | ||
| In | Sn | Sb | |
| Tl | Pb | Bi | Po |
| Uut | Uuq | Uup | Uuh |
References
- ^ Brady, James E. (1990). General Chemistry: Principles and Structure (5th ed.). Wiley. p. 96. ISBN 9780471621317. http://books.google.com/?id=UVlGAAAAYAAJ&dq=post-transition+metal+brady&q=post-transition+%22just+to+the+right%22#search_anchor.
- ^ Cox, P. A. (2004). Instant Notes in Inorganic Chemistry (2nd ed.). Garland Science/BIOS Scientific Publishers. pp. 185–186. ISBN 9781859962893. http://books.google.com/books?id=8yQOhvD3tWcC&pg=PA185#v=onepage&q=&f=false.
- ^ International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. pp. IR3-6.2. Electronic version.
- ^ a b Jensen, William B. (2003). “The Place of Zinc, Cadmium, and Mercury in the Periodic Table”. Journal of Chemical Education 80 (8): 952–961. doi:10.1021/ed080p952.
- ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the “Gold Book”) (1997). Online corrected version: (2006–) “Transition Metal“.
- ^ Wang, Xuefang; Andrews, Lester; Riedel, Sebastian; Kaupp, Martin (2007). “Mercury Is a Transition Metal: The First Experimental Evidence for HgF4“. Angew. Chem. Int. Ed. 46 (44): 8371–8375. doi:10.1002/anie.200703710. PMID 17899620.
- ^ “Elusive Hg(IV) species has been synthesized under cryogenic conditions”. EVISA news. October 12, 2007. http://www.speciation.net/Public/News/2007/10/12/3303.html. Retrieved December 2, 2007.
- ^ Egdell, R. G. (2007). “Post Transition Metal Chemistry Lecture 1” (PDF). WebLearn – Oxford Campus, Department of Chemistry. http://weblearn.ox.ac.uk/site/mathsphys/chem/year3/mt2007/posttrans/resources/lecture%201.pdf. Retrieved December 2, 2007.
External links
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This information originally retrieved from http://en.wikipedia.org/wiki/Post-transition_metal
on Wednesday 3rd August 2011 1:19 pm EDT
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