Metales de transición
Los metales de transición forman el amplio bloque central de la tabla periódica (grupos 3 al 12). Son los metales en los que la mayoría de la gente piensa al oír la palabra metal: hierro, cobre, oro, plata, níquel, zinc, titanio, wolframio y muchos más. Son excelentes conductores, forman compuestos coloreados y muchos son buenos catalizadores.
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| No. | Symbol | Elemento | Peso atómico (u) | Densidad (g/cm³) | Punto de fusion (°C) | Punto de ebullición (°C) | Electronegatividad | Descubridor |
|---|---|---|---|---|---|---|---|---|
| 21 | Sc | Escandio | 44.9559 | 2.985 | 1540.85 | 2835.85 | 1.36 | 1879 |
| 22 | Ti | Titanio | 47.8671 | 4.506 | 1667.85 | 3286.85 | 1.54 | 1791 |
| 23 | V | Vanadio | 50.9415 | 6 | 1909.85 | 3406.85 | 1.63 | 1801 |
| 24 | Cr | Cromo | 51.9962 | 7.19 | 1906.85 | 2670.85 | 1.66 | 1794 |
| 25 | Mn | Manganeso | 54.938 | 7.21 | 1245.85 | 2060.85 | 1.55 | 1774 |
| 26 | Fe | Hierro | 55.8452 | 7.874 | 1537.85 | 2860.85 | 1.83 | 5000 BC |
| 27 | Co | Cobalto | 58.9332 | 8.9 | 1494.85 | 2926.85 | 1.88 | 1735 |
| 28 | Ni | Níquel | 58.6934 | 8.908 | 1454.85 | 2729.85 | 1.91 | 1751 |
| 29 | Cu | Cobre | 63.5463 | 8.96 | 1084.62 | 2561.85 | 1.9 | 9000 BC |
| 30 | Zn | Zinc | 65.382 | 7.14 | 419.53 | 906.85 | 1.65 | 1000 BC |
| 39 | Y | Itrio | 88.9058 | 4.472 | 1525.85 | 2929.85 | 1.22 | 1794 |
| 40 | Zr | Circonio | 91.2242 | 6.52 | 1854.85 | 4376.85 | 1.33 | 1789 |
| 41 | Nb | Niobio | 92.9064 | 8.57 | 2476.85 | 4743.85 | 1.6 | 1801 |
| 42 | Mo | Molibdeno | 95.951 | 10.28 | 2622.85 | 4638.85 | 2.16 | 1778 |
| 43 | Tc | Tecnecio | 98.9062 | 11 | 2156.85 | 4264.85 | 1.9 | 1937 |
| 44 | Ru | Rutenio | 101.072 | 12.45 | 2333.85 | 4149.85 | 2.2 | 1844 |
| 45 | Rh | Rodio | 102.906 | 12.41 | 1963.85 | 3694.85 | 2.28 | 1804 |
| 46 | Pd | Paladio | 106.421 | 12.023 | 1554.9 | 2962.85 | 2.2 | 1802 |
| 47 | Ag | Plata | 107.868 | 10.49 | 961.78 | 2161.85 | 1.93 | 5000 BC |
| 48 | Cd | Cadmio | 112.414 | 8.65 | 321.07 | 766.85 | 1.69 | 1817 |
| 72 | Hf | Hafnio | 178.492 | 13.31 | 2232.85 | 4602.85 | 1.3 | 1922 |
| 73 | Ta | Tántalo | 180.948 | 16.69 | 3016.85 | 5457.85 | 1.5 | 1802 |
| 74 | W | Tungsteno | 183.841 | 19.25 | 3421.85 | 5929.85 | 2.36 | 1783 |
| 75 | Re | Renio | 186.207 | 21.02 | 3185.85 | 5595.85 | 1.9 | 1925 |
| 76 | Os | Osmio | 190.233 | 22.59 | 3032.85 | 5011.85 | 2.2 | 1803 |
| 77 | Ir | Iridio | 192.217 | 22.56 | 2445.85 | 4129.85 | 2.2 | 1803 |
| 78 | Pt | Platino | 195.085 | 21.45 | 1768.25 | 3824.85 | 2.28 | 1735 |
| 79 | Au | Oro | 196.967 | 19.3 | 1064.18 | 2969.85 | 2.54 | 6000 BC |
| 80 | Hg | Mercurio | 200.592 | 13.534 | -38.829 | 356.73 | 2 | 1500 BC |
| 104 | Rf | Rutherfordio | 261 | 23.2 | 2126.85 | 5526.85 | - | 1969 |
| 105 | Db | Dubnio | 268 | 29.3 | - | - | - | 1970 |
| 106 | Sg | Seaborgio | 269 | 35 | - | - | - | 1974 |
| 107 | Bh | Bohrio | 270.133 | 37.1 | - | - | - | 1981 |
| 108 | Hs | Hasio | 269 | 40.7 | -147.15 | - | - | 1984 |
| 112 | Cn | Copernicio | 285 | 23.7 | - | 3296.85 | - | 1996 |