21 jul 1899 año - Ernest Rutherford
Descripción:
 Created an atomic model called "Planetary", where he found out that an element can be "broken" into two elements as well as that a positive charge must exist at the center of the atom and not spread throughout the atom. 
Añadido al timeline:
fecha:
21 jul 1899 año
Ahora mismo
 ~ 126 years ago 
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