3. state how each of the following scientists contributed to the atomic theory, and how
the model of the atom changed with each scientist contribution.
bohr, rutherford, democritus, thomson, dalton

Henry moseley used x-ray experiments to determine the atomic number of elements. how did his discovery contribute to the development of the periodic table? a.it confirmed that elements should be arranged in strict order of increasing atomic mass. b.it led to elements with similar atomic numbers being grouped together. c.it allowed the elements to be placed in strict order of increasing atomic number. d.it showed that the way mendeleev grouped elements together was completely wrong.