1913 Discovery of Atomic Number
- Henry Moseley discovered the concept of the atomic number in 1913.
- The atomic number is the number of protons in the nucleus of an atom.
Moseley fired _____ energy _____ at different elements. This caused _____ to be released. _____ amounts of x-rays were released depending on the _____ of the _____ number. The more _____ there were, the more x-rays were _____. The amount of x-rays given off were _____ to the atomic _____ of whatever element it was. For every _____ in proton, there was a direct _____ in _____ given off. Moseley concluded the atomic _____ was _____ to the number of protons an _____ had in its nucleus.

