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5 jan 1914 ano - H.G.J Moseley: Atomic Structure He determined that "The atomic number of an element is equal to the number of protons in the nucleus". He also came to the conclusion that there were 3 unknown elements (there are actually 4 unknown ) between aluminium and gold.

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Atomic Structure timeline

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5 jan 1914 ano
Agora
~ 111 years ago
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