Poor metal
From Wikipedia, the free encyclopedia
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, however, by their significantly-greater boiling points 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 to 116, which are currently allocated the systematic names ununtrium, ununquadium, ununpentium and ununhexium, would likely exhibit properties characteristic of poor metals; however as of yet insufficient quantities of them have been synthesized to examine their chemical properties.
| 13 | 14 | 15 | 16 | 17 |
|---|---|---|---|---|
| B Boron | C Carbon | N Nitrogen | O Oxygen | F Fluorine |
| Al Aluminium | Si Silicon | P Phosphorus | S Sulfur | Cl Chlorine |
| Ga Gallium | Ge Germanium | As Arsenic | Se Selenium | Br Bromine |
| In Indium | Sn Tin | Sb Antimony | Te Tellurium | I Iodine |
| Tl Thallium | Pb Lead | Bi Bismuth | Po Polonium | At Astatine |
[edit] See also
[edit] References
The Chemistry Student's Companion, Stephen Schaffter, Lulu Press, Inc 2006 ISBN 1-4116-9247-0
[edit] External links
Periodic tables | |
|---|---|
| Layouts | Standard · Vertical · Full names · Names and atomic masses · Text for last · Huge table · Metals and nonmetals · Blocks · Valences · Inline f-block · 218 elements · Electron configurations · Atomic masses · Electronegativities · Alternatives |
| Lists of elements | Name · Atomic symbol · Atomic number · Boiling point · Melting point · Density · Atomic mass |
| Groups | 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 · 15 · 16 · 17 · 18 |
| Periods: | 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 |
| Element categories | Alkalis · Alkaline earths · Lanthanides · Actinides · Transition metals · Metals · Metalloids · Nonmetals · Halogens · Noble gases |
| Blocks | s-block · p-block · d-block · f-block · g-block |
ast:Metal del bloque p ca:Metall del bloc p es:Metal del bloque p eo:Posttransira metalo fr:Métal pauvre ko:전이후 금속 id:Logam miskin is:Tregur málmur it:Metalli del blocco p he:מתכות מעבר עמידות lmo:Metàj del blòch p nl:Hoofdgroepmetaal ja:卑金属 sv:Övrig metall ta:குறை மாழை th:โลหะหลังทรานซิชัน tr:Zayıf metaller zh:主族金屬
