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| Elemento | Sym- él era | Atómico no. | Atómico peso | Específico gravedad | Derritiendo punto C | Hirviendo punto C | No. de isótopos1 | Descubridor | Año |
|---|---|---|---|---|---|---|---|---|---|
| Actinio | Y | 89 | 2272 | 10.073 | 1051 | 3198 | 11 | Debierne/Giesel | 1899/1902 |
| Aluminio | Al | 13 | 26.981538 | 2.6989 | 660.32 | 2519 | 8 | Whler | 1827 |
| Americio | Soy | 95 | 2432 | 13.67 | 1176 | 2011 | 134 | Seaborg y col. | 1944 |
| Antimonio | Sb | 51 | 121.76 | 6.61 | 630.63 | 1587 | 29 | Tiempos históricos tempranos | ? |
| Argón | Con | 18 | 39.948 | 1.78375 | -189.35 | -185.85 | 8 | Rayleigh y Ramsay | 1894 |
| Arsénico (gris) | Como | 33 | 74.9216 | 5.73 | 817 | 603 | 14 | Albert | 1250 |
| Astatine | A | 85 | 2102 | ? | 302 | ? | 21 | Corson y col. | 1940 |
| Bario | Licenciado en Letras | 56 | 137.327 | 3.5 | 727 | 1897 | 25 | Davy | 1808 |
| Berkelio | Bk | 97 | 2472 | 14.006 | 1050 (? Formulario) | ? | 84 | Seaborg y col. | 1949 |
| Berilio | Ser | 4 | 9.012182 | 1.848 | 1287 | 2471 | 6 | Vauquelin | 1798 |
| Bismuto | Con un | 83 | 208.98038 | 9.747 | 271.40 | 1564 | 19 | Geoffroy el Joven | 1753 |
| Bohrium | Bh | 107 | 2642 | ? | ? | ? | ? | Armbruster y Mnzenberg | 1981 |
| Boro | B | 5 | 10.811 | 2.377 | 2075 | 4000 | 6 | Gay-Lussac y Thnard; Davy | 1808 |
| Bromo | Br | 35 | 79.904 | 3.125 | -7.2 | 58.8 | 19 | Balard | 1826 |
| Cadmio | Cd | 48 | 112.411 | 8.65 | 321.07 | 767 | 22 | Stromeyer | 1817 |
| Calcio | Ese | 20 | 40.078 | 1.55 | 842 | 1484 | 14 | Davy | 1808 |
| Californio | Cf | 98 | 2512 | ? | 900 | ? | 124 | Seaborg y col. | 1950 |
| Carbón | C | 6 | 12.0107 | 1.8?3.58 | 4492 (grafito) | 3825 | 7 | Prehistórico | ? |
| Cerio | Esta | 58 | 140.116 | 6.771 | 798 | 3443 | 19 | Berzelius y Hisinger; Klaproth | 1803 |
| Cesio | Cs | 55 | 132.90545 | 1.873 | 28.5 | 671 | 22 | Bunsen y Kirchoff | 1860 |
| Cloro | Cl | 17 | 35.453 | 1.565 | -101.5 | -34.04 | 11 | Scheele | 1774 |
| Cromo | Cr | 24 | 51.9961 | 7.18-7.20 | 1907 | 2671 | 9 | Vauquelin | 1797 |
| Cobalto | Qué | 27 | 58.9332 | 8.9 | 1495 | 2927 | 14 | Brandt | c.1735 |
| Cobre | Con | 29 | 63.546 | 8.96 | 1084.62 | 2562 | 11 | Prehistórico | ? |
| curio | Cm | 96 | 2472 | 13.513 | 1345 | 3100 | 134 | Seaborg y col. | 1944 |
| Darmstadtium | Ds | 110 | 2812 | ? | ? | ? | ? | S. Hofmann et al. | 1994 |
| Dubnium | Db | 105 | 2622 | ? | ? | ? | ? | Ghiorso y col. | 1970 |
| Disprosio | dos | 66 | 162.5 | 8.540 | 1412 | 2567 | 21 | de Boisbaudran | 1886 |
| Einstenio | Es | 99 | 2522 | ? | 860 | ? | 124 | Ghiorso y col. | 1952 |
| Erbio | Es | 68 | 167.259 | 9.045 | 1529 | 2868 | 16 | Mosander | 1843 |
| Europio | Me | 63 | 151.964 | 5.283 | 822 | 1529 | 21 | Demarcay | 1901 |
| Fermio | Fm | 100 | 2572 | ? | 1527 | ? | 104 | Ghiorso y col. | 1953 |
| Flúor | F | 9 | 18.9984032 | 1.1085 | -219.67 | -188.12 | 6 | Moissan | 1886 |
| Francio | P. | 87 | 2232 | ? | 27 | ? | 21 | Perey | 1939 |
| Gadolinio | Di-s | 64 | 157.25 | 7.898 | 1313 | 3273 | 17 | de Marignac | 1880 |
| Galio | Georgia | 31 | 69.723 | 5.904 | 29.76 | 2204 | 14 | de Boisbaudran | 1875 |
| Germanio | Dar | 32 | 72.64 | 5.323 | 938.25 | 2833 | 17 | Winkler | 1886 |
| Oro | A | 79 | 196.96655 | 19.32 | 1064.18 | 2856 | 21 | Prehistórico | ? |
| Hafnio | Hf | 72 | 178.49 | 13.31 | 2233 | 4603 | 17 | Coster y por Hevesy | 1923 |
| Hassium | Hs | 108 | 2772 | ? | ? | ? | ? | Armbruster y Mnzenberg | 1983 |
| Helio | Él | 2 | 4.002602 | 0.17855 | -272.2 | -268.934 | 5 | Janssen | 1868 |
| Holmio | Ho | 67 | 164.93032 | 8.781 | 1474 | 2700 | 29 | Delafontaine y Soret | 1878 |
| Hidrógeno | H | 1 | 1.00794 | 0.0705 | -259.34 | -252.87 | 3 | Cavendish | 1766 |
| Indio | En | 49 | 114.818 | 7.31 | 156.60 | 2072 | 34 | Reich y Richter | 1863 |
| Yodo | I | 53 | 126.90447 | 4.93 | 113.7 | 184.4 | 24 | Cortés | 1811 |
| Iridio | Ir | 77 | 192.217 | 22.42 | 2446 | 4428 | 25 | Tennant | 1804 |
| Planchar | Fe | 26 | 55.845 | 7.894 | 1538 | 2861 | 10 | Prehistórico | ? |
| Criptón | Kr | 36 | 83.8 | 3.7335 | -157.38 | -153.22 | 23 | Ramsay y Travers | 1898 |
| Lantano | La | 57 | 138.9055 | 6.166 | 918 | 3464 | 19 | Mosander | 1839 |
| Lawrencium | Lr | 103 | 2622 | ? | 1627 | ? | 204 | Ghiorso y col. | 1961 |
| Dirigir | Pb | 82 | 207.2 | 11.35 | 327.46 | 1749 | 29 | Prehistórico | ? |
| Litio | En el | 3 | 6.941 | 0.534 | 180.50 | 1342 | 5 | Arfvedson | 1817 |
| Lutecio | Lu | 71 | 174.967 | 9.835 | 1663 | 3402 | 22 | Urbain / von Welsbach | 1907 |
| Magnesio | Mg | 12 | 24.305 | 1.738 | 650 | 1090 | 8 | Negro | 1755 |
| Manganeso | Minnesota | 25 | 54.938049 | 7.21?7.449 | 1246 | 2061 | 11 | Gahn, Scheele y Bergman | 1774 |
| Meitnerio | Monte | 109 | 2682 | ? | ? | ? | ? | GSI, Darmstadt, Alemania occidental | 1982 |
| Mendelevio | Maryland | 101 | 2582 | ? | 827 | ? | 34 | Ghiorso y col. | 1955 |
| Mercurio | Hg | 80 | 200.59 | 13.546 | -38.83 | 356.73 | 26 | Prehistórico | ? |
| Molibdeno | Mes | 42 | 95.94 | 10.22 | 2623 | 4639 | 20 | Scheele | 1778 |
| Neodimio | Dakota del Norte | 60 | 144.24 | 6.80 & 7.00410 | 1021 | 3074 | 16 | de Welsbach | 1885 |
| Neón | Nació | 10 | 20.1797 | 0.89990 (g / 10C / 1 atm) | -248.59 | -246.08 | 8 | Ramsay y Travers | 1898 |
| Neptunio | P.ej | 93 | 2372 | 20.25 | 644 | 154 | McMillan y Abelson | 1940 | |
| Níquel | Ni | 28 | 58.6934 | 8.902 | 1455 | 2913 | 11 | Cronstedt | 1751 |
| Niobio (Columbio) | Nótese bien | 41 | 92.90638 | 8.57 | 2477 | 4744 | 24 | Hatchett | 1801 |
| Nitrógeno | norte | 7 | 14.0067 | 0.8085 | -210.00 | -195.79 | 8 | Rutherford | 1772 |
| Nobelio | No | 102 | 2592 | ? | 827 | ? | 74 | Ghiorso y col. | 1958 |
| Osmio | Tú | 76 | 190.23 | 22.57 | 3033 | 5012 | 19 | Tennant | 1803 |
| Oxígeno | O | 8 | 15.9994 | 1.145 | -218.79 | -182.95 | 8 | Priestley / Scheele | 1774 |
| Paladio | Pd | 46 | 106.42 | 12.02 | 1554.9 | 2963 | 21 | Wollaston | 1803 |
| Fosforoso (blanco) | PAG | 15 | 30.973761 | 1.82 | 44.15 | 280.5 | 7 | Marca | 1669 |
| Platino | por | 78 | 195.078 | 21.45 | 1768.4 | 3825 | 32 | Ulloa / Madera | 1735/1741 |
| Plutonio | Podría | 94 | 2442 | 19.84 | 640 | 3228 | 164 | Seaborg y col. | 1940 |
| Polonio | Correos | 84 | 2092 | 9.32 | 254 | 962 | 34 | Curie | 1898 |
| Potasio | PARA | 19 | 39.0983 | 0.862 | 63.5 | 759 | 10 | Davy | 1807 |
| Praseodimio | Pr | 59 | 140.90765 | 6.772 | 931 | 3520 | 15 | de Welsbach | 1885 |
| Prometeo | Pm | 61 | 1452 | ? | 1042 | 3000 | 14 | Marinsky y col. | 1945 |
| Protactinio | Bien | 91 | 231.03588 | 15.373 | 1572 | ? | 14 | Hahn y Meitner | 1917 |
| Radio | Salir | 88 | 2262 | 5.0? | 700 | ? | 15 | Pierre y Marie Curie | 1898 |
| Radón | Rn | 86 | 2222 | 4.45 | -71 | -61.7 | 20 | ánima | 1900 |
| Renio | Re | 75 | 186.207 | 21.02 | 3186 | 5596 | 21 | Noddack, Berg y Tacke | 1925 |
| Rodio | Rh | 45 | 102.9055 | 12.41 | 1964 | 3695 | 20 | Wollaston | 1803 |
| Roentgenio10 | Rg | 111 | 2722 | ? | ? | ? | ? | Hofmann et al. | 1994 |
| Rubidio | Rb | 37 | 85.4678 | 1.532 | 39.30 | 688 | 20 | Bunsen y Kirchoff | 1861 |
| Rutenio | Ru | 44 | 101.07 | 12.44 | 2334 | 4150 | 16 | Klaus | 1844 |
| Rutherfordio | Rf | 104 | 2612 | ? | ? | ? | ? | Ghiorso y col. | 1969 |
| Samario | Sm | 62 | 150.36 | 7.536 | 1074 | 1794 | 17 | Boisbaudran | 1879 |
| Escandio | Carolina del Sur | 21 | 44.95591 | 2.989 | 1541 | 2836 | 15 | Nilson | 1878 |
| Seaborgio | Sg | 106 | 2662 | ? | ? | ? | ? | Ghiorso y col. | 1974 |
| Selenio (gris) | Se | 34 | 78.96 | 4.79 | 220.5 | 685 | 20 | Berzelius | 1817 |
| Silicio | Si | 14 | 28.0855 | 2.33 | 1414 | 3265 | 8 | Berzelius | 1824 |
| Plata | Ag | 47 | 107.8682 | 10.5 | 961.78 | 2162 | 27 | Prehistórico | ? |
| Sodio | En | 11 | 22.98977 | 0.971 | 97.80 | 883 | 7 | Davy | 1807 |
| Estroncio | Sr | 38 | 87.62 | 2.54 | 777 | 1382 | 18 | Davy | 1808 |
| Azufre | S | 16 | 32.065 | 2.0710 | 95,3 (rómbico) | 444.60 | 10 | Prehistórico | ? |
| Tantalio | Ejército de reserva | 73 | 180.9479 | 16.654 | 3017 | 5458 | 19 | Ekeberg | 1801 |
| Tecnecio | Tc | 43 | 982 | 11.503 | 2157 | 4265 | 23 | Perrier y Segr | 1937 |
| Telurio | A | 52 | 127.60 | 6.24 | 449.51 | 988 | 29 | de Reichenstein | 1782 |
| Terbio | También | 65 | 158.92534 | 8.234 | 1356 | 3230 | 24 | Mosander | 1843 |
| Talio | TL | 81 | 204.3833 | 11.85 | 304 | 1473 | 28 | Crookes | 1861 |
| Torio | Th | 90 | 232.0381 | 11.72 | 1750 | 4788 | 12 | Berzelius | 1828 |
| Tulio | Tm | 69 | 168.93421 | 9.314 | 1545 | 1950 | 18 | Cleve | 1879 |
| Estaño (blanco) | Sn | 50 | 118.71 | 7.31 | 231.93 | 2602 | 28 | Prehistórico | ? |
| Titanio | Tú | 22 | 47.867 | 4.55 | 1668 | 3287 | 9 | Gregor | 1791 |
| Tungsteno | EN | 74 | 183.84 | 19.3 | 3422 | 5555 | 22 | J. y F. d'Elhuyar | 1783 |
| Uranio | U | 92 | 238.02891 | 19.05 | 1135 | 4131 | 15 | Peligot | 1841 |
| Vanadio | V | 23 | 50.9415 | 6.11 | 1910 | 3407 | 9 | del Rio | 1801 |
| Xenón | Coche | 54 | 131.293 | 3.525 | -111.79 | -108.12 | 31 | Ramsay y Travers | 1898 |
| Iterbio | Yb | 70 | 173.04 | 6.972 | 819 | 1196 | 16 | Marignac | 1878 |
| Itrio | Y | 39 | 88.90585 | 4.457 | 1522 | 3345 | 21 | Gadolin | 1794 |
| Zinc | Zn | 30 | 65.39 | 7.133 | 419.5 | 907 | 15 | Prehistórico | ? |
| Circonio | Zr | 40 | 91.224 | 6.5063 | 1855 | 4409 | 20 | Klaproth | 1789 |
| La tabla periodica | Ciencia física | Un importante descubrimiento en física de partículas |
