Metal de Transición
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Metales de los Grupos 3-12 con orbitales d parcialmente llenos. Exhiben estados de oxidación variables, forman compuestos coloreados y suelen actuar como catalizadores. Esta es la categoría de elementos más grande de la tabla periódica.
Propiedades clave
Los metales de transición se caracterizan por exhibir múltiples estados de oxidación gracias a los electrones en los orbitales d. Forman complejos de coordinación con ligandos, frecuentemente coloreados, con aplicaciones en catálisis, pigmentos y medicina. Poseen alta densidad, puntos de fusión elevados y son excelentes conductores del calor y la electricidad.
Tabla comparativa
| # | Símbolo | Nombre | Masa (u) | Pto. fusión | Pto. ebullición | Densidad | Fase |
|---|---|---|---|---|---|---|---|
| 21 | Sc | Scandium | 44,956 | 1540.8 °C | 2835.8 °C | 2,985 | Solid |
| 22 | Ti | Titanium | 47,867 | 1667.8 °C | 3286.8 °C | 4,506 | Solid |
| 23 | V | Vanadium | 50,942 | 1909.8 °C | 3406.8 °C | 6,11 | Solid |
| 24 | Cr | Chromium | 51,996 | 1906.8 °C | 2670.8 °C | 7,15 | Solid |
| 25 | Mn | Manganese | 54,938 | 1245.8 °C | 2060.8 °C | 7,21 | Solid |
| 26 | Fe | Iron | 55,845 | 1537.8 °C | 2860.8 °C | 7,874 | Solid |
| 27 | Co | Cobalt | 58,933 | 1494.8 °C | 2926.8 °C | 8,9 | Solid |
| 28 | Ni | Nickel | 58,693 | 1454.8 °C | 2729.8 °C | 8,908 | Solid |
| 29 | Cu | Copper | 63,546 | 1084.6 °C | 2561.8 °C | 8,96 | Solid |
| 30 | Zn | Zinc | 65,38 | 419.5 °C | 906.9 °C | 7,134 | Solid |
| 39 | Y | Yttrium | 88,906 | — | — | — | Solid |
| 40 | Zr | Zirconium | 91,224 | — | — | — | Solid |
| 41 | Nb | Niobium | 92,906 | — | — | — | Solid |
| 42 | Mo | Molybdenum | 95,95 | — | — | — | Solid |
| 43 | Tc | Technetium | 97,0 | — | — | — | Solid |
| 44 | Ru | Ruthenium | 101,07 | — | — | — | Solid |
| 45 | Rh | Rhodium | 102,91 | — | — | — | Solid |
| 46 | Pd | Palladium | 106,42 | — | — | — | Solid |
| 47 | Ag | Silver | 107,87 | — | — | — | Solid |
| 48 | Cd | Cadmium | 112,41 | — | — | — | Solid |
| 72 | Hf | Hafnium | 178,49 | — | — | — | Solid |
| 73 | Ta | Tantalum | 180,95 | — | — | — | Solid |
| 74 | W | Tungsten | 183,84 | — | — | — | Solid |
| 75 | Re | Rhenium | 186,21 | — | — | — | Solid |
| 76 | Os | Osmium | 190,23 | — | — | — | Solid |
| 77 | Ir | Iridium | 192,22 | — | — | — | Solid |
| 78 | Pt | Platinum | 195,08 | — | — | — | Solid |
| 79 | Au | Gold | 196,97 | — | — | — | Solid |
| 80 | Hg | Mercury | 200,59 | — | — | — | Liquid |
| 104 | Rf | Rutherfordium | 267,0 | — | — | — | Solid |
| 105 | Db | Dubnium | 268,0 | — | — | — | Solid |
| 106 | Sg | Seaborgium | 269,0 | — | — | — | Solid |
| 107 | Bh | Bohrium | 270,0 | — | — | — | Solid |
| 108 | Hs | Hassium | 277,0 | — | — | — | Solid |