Chemistry Quick Facts

Element Properties

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Periodic Table

  Periodic Table
  Alkali Metals
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  Poor Metals


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& Patents


Poor Metals
Chemical Properties, Physical Properties and General Information

Radioactive Material Sign
Radioactive Natural Element
Radioactive Material Sign
Radioactive Synthetic Element
Toxic Material Sign
Toxic Element
Name Sym. No. Atomic
Phase Density Valence
Aluminum Toxic Element Al 13 26.9815386 660.32 C 2519 C Solid 2.70 g/cm3 3s2 3p1 +3
(amphoteric oxide)
Gallium Ga 31 69.723 29.7646 C 2204 C Solid 5.91 g/cm3 4s2 4p1 +3, +1
(amphoteric oxide)
Indium In 49 114.818 156.60 C 2072 C Solid 7.31 g/cm3 5s2 5p1 +3
(amphoteric oxide)
Tin Sn 50 118.710 231.93 C 2602 C Solid 7.287 g/cm3 5s2 5p2 +2,+4
(amphoteric oxide)
Thallium Toxic Element Tl 81 204.3833 304 C 1473 C Solid 11.85 g/cm3 6s2 6p1 +1,+3
(mildly basic oxide)
Lead Toxic Element Pb 82 207.2 327.46 C 1749 C Solid 11.34 g/cm3 6s2 6p2 +2,+4
(amphoteric oxide)
Bismuth Bi 83 208.98040 271.5 C 1564 C Solid 9.78 g/cm3 6s2 6p3 +3,+5
(mildly acidic oxide)
? Ununtrium Radioactive Synthetic Element Uut 113 284 Unknown Unknown Solid Unknown ? 7s2 7p1 Unknown
? Ununquadium Radioactive Synthetic Element Uuq 114 289 Unknown Unknown Solid Unknown ? 7s27p2 Unknown
? Ununpentium Radioactive Synthetic Element Uup 115 288 Unknown Unknown Solid Unknown ? 7s2 7p3 Unknown
? Ununhexium Radioactive Synthetic Element Uuh 116 292 Unknown Unknown Solid Unknown ? 7s27p4 Unknown

Poor Metals: The poor metals (post-transition metals) are some metallic elements of the p-block of the periodic table that are more electronegative than the transition metals. Their melting and boiling points are generally lower than those of the transition metals, and they are also softer. They are distinguished from the metalloids, however, by their significantly-greater boiling points in the same row.

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Last updated: April 2011
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