Importancia de las mediciones y sistemas de unidades en la practica profesional.
Esta es una lista de los elementos químicos ordenados por sus símbolos alfabéticamente.
Símbolo[pic] |Nombre[pic] |Número atómico[pic] |Masa atómica
(en g/mol)[pic] |Densidad a 20°C
(en g/cm3)[pic] |Punto de fusión
(en °C)[pic] |Punto de ebullición
(en °C)[pic] |Año de descubrimiento[pic] |Descubridor[pic] | |Ac |Actinio |89 |227,0278 |10,07 |1047 |3197 |1899 |Debierne 2-3 | |Ag |Plata |47 |107,8682 |10,49 |961,9 |2212 |prehistórico |desconocido | |Al |Aluminio |13 |26,981539 |2,70 |660,5 |2467 |1825 |Oersted | |Am |Americio |95 |243,0614 |13,67 |994 |2607 |1944 |Seaborg | |Ar |Argón |18 |39,948 |1,66 g/l |-189,4 |-185,9 |1894 |Ramsay y Rayleigh | |As |Arsénico |33 |74,92159 |5,72 |613 |613 …ver más…
|1778 |Scheele | |Mt |Meitnerio |109 |266 | | | |1982 |Society for Heavy Ion Research | |N |Nitrógeno |7 |14,00674 |1,17 g/l |-209,9 |-195,8 |1772 |Rutherford | |Na |Sodio |11 |22,989768 |0,97 |97,8 |892 |1807 |Davy | |Nb |Niobio |41 |92,90638 |8,58 |2468 |4927 |1801 |Hatchet | |Nd |Neodimio |60 |144,24 |7,00 |1010 |3127 |1895 |von Welsbach | |Ne |Neón |10 |20,1797 |0,84 g/l |-248,7 |-246,1 |1898 |Ramsay y Travers | |Ni |Níquel |28 |58,69 |8,91 |1453 |2732 |1751 |Cronstedt | |No |Nobelio |102 |259,1009 | | | |1958 |Seaborg | |Np |Neptunio |93 |237,0482 |20,48 |640 |3902 |1940 |McMillan y Abelson | |O |Oxígeno |8 |15,9994 |1,33 g/l |-218,4 |-182,9 |1774 |Priestley y Scheele | |Os |Osmio |76 |190,2 |22,61 |3045 |5027 |1803 |Tenant | |P |Fósforo |15 |30,973762 |1,82 |44 (P4) |280 (P4) |1669 |Brandt | |Pa |Protactinio |91 |231,0359 |15,37 |1554 |4030 |1917 |Soddy, Cranston y Hahn | |Pb |Plomo |82 |207,2 |11,34 |327,5 |1740 |prehistórico |desconocido | |Pd |Paladio |46 |106,42 |12,02 |1552 |3140 |1803 |Wollaston | |Pm |Prometio |61 |146,9151 |7,22 |1080 |2730 |1945 |Marinsky y Glendenin | |Po |Polonio |84 |208,9824 |9,20 |254 |962 |1898 |Marie y Pierre Curie | |Pr |Praseodimio |59 |140,90765 |6,48 |931 |3212 |1895 |von Welsbach | |Pt |Platino |78 |195,08 |21,45 |1772 |3827 |1557 |Scaliger | |Pu |Plutonio |94 |244,0642 |19,74 |641 |3327 |1940 |Seaborg | |Ra |Radio |88 |226,0254 |5,50 |700 |1140 |1898 |Marie y Pierre Curie | |Rb |Rubidio |37 |85,4678 |1,53 |39 |688 |1861 |Bunsen