Henry Moseley (TABLE) He arranged the elements in the periodic table according to atomic numbers. He realized his findings indicated that the identity of an element is how many protons it has. The number of protons represents the atomic number of an element. (1 ene 1914 año – 15 jul 1914 año)
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1 ene 1914 año
15 jul 1914 año
~ 6 months