Known as the "father of the nuclear age". he didn't agree with Thomson. His thoughts were that atoms consisted mostly of empty space with just a few electrons, while most of the mass was in the center of the atom. He called this mass the nucleus. (1 ene 1905 año – 31 mayo 1908 año)
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1 ene 1905 año
31 mayo 1908 año
~ 3 years and 4 months