5 gen 1914 anni - 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.
Aggiunto al nastro di tempo:
Data:
5 gen 1914 anni
Adesso
~ 111 years ago