apr 30, 1914 - H.G.J Moseley
Description:
Using x-ray tubes, determined the charges on the nuclei of most atoms. He wrote"The atomic number of an element is equal to the number of protons in the nucleus". This work was used to reorganize the periodic table based upon atomic number instead of atomic mass.Added to timeline:
Date:
apr 30, 1914
Now
~ 110 years ago
