Element Properties
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Reference
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Poor Metals
Chemical Properties, Physical Properties and General Information
Radioactive Natural Element | Radioactive Synthetic Element | Toxic Element |
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Name | Sym. | No. | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Valence Electrons | Oxidation States |
Aluminum | 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 | Tl | 81 | 204.3833 | 304 °C | 1473 °C | Solid | 11.85 g/cm3 | 6s2 6p1 | +1,+3 (mildly basic oxide) |
Lead | 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 | Uut | 113 | 284 | Unknown | Unknown | Solid | Unknown | ? 7s2 7p1 | Unknown |
? Ununquadium | Uuq | 114 | 289 | Unknown | Unknown | Solid | Unknown | ? 7s27p2 | Unknown |
? Ununpentium | Uup | 115 | 288 | Unknown | Unknown | Solid | Unknown | ? 7s2 7p3 | Unknown |
? Ununhexium | 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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