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Sumario numero atomico, masa atomica, numero masico (atomic number, atomic mass, mass number)
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Resumen de QuimicaCada atomo tiene un numero que lo identifica de los demas atomos, eso es llamado numero atomi
El numero atomico es igual a la cantidad de protones presentes en el nucleo del atomo. Sí el atom
de protones es igual a la cantidad de electrones.
Cationes: tiene un ion con carga positiva que hace perder un electron.
Aniones: tiene un ion con carga negativa que hace ganar un electron.
El numero masico es la suma de protones y neutrones.
La masa de protones y neutrones es de 1.7 x 10 ^{-24}
La del electron es 1837 veces menor a la del proton, por ello no se toma en cuenta al calcular la m
Un Isotopo, es un atomo con diferente masa atomica, pero con mismo numero atomico.
Es un atomo de un mismo elemento que difiere de la cantidad de neutrones, pero con misma canti
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