The chief contribution of physicist Henry Moseley to atomic theory was
A) the discovery of the periodic law.
B) the determination of the charge of the proton.
C) the measurement of the atomic numbers of the elements.
D) the determination of the electric charge of the electron.
E) the discovery of the law of octaves.

Question

Quizplus · Accepted Answer

Henry Moseley developed a method to measure atomic numbers of elements, which led to the restructuring of the periodic table based on atomic number rather than atomic mass. This discovery helped pave the way for the modern understanding of the structure of the atom.

The Chief Contribution of Physicist Henry Moseley to Atomic Theory