Other Metal

The trivial name poor metals (or post-transition metals) is sometimes applied to the metallic elements of the p-block of the periodic table. They are more electropositive than the transition metals, but less so than the alkali metals and alkaline earth metals. more...

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Their melting and boiling points are generally lower than those of the transition metals, and they are also softer.

"Poor metals" is not a rigorous IUPAC-approved nomenclature, but the grouping is generally taken to include gallium, indium, tin, thallium, lead, bismuth and polonium; germanium and antimony are sometimes included (although these are also often considered as metalloids or "semi-metals"). Elements 113 to 116 (currently allocated the systematic names ununtrium, ununquadium, ununpentium and ununhexium) would likely exhibit properties characteristic of "poor metals", however as yet insufficient quantities of them have been synthesized to examine their chemistry.

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