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Later in the same year Henry Moseley provided additional experimental evidence in favor of Niels Bohr's theory.
These results refined Ernest Rutherford's and Antonius Van den Broek's model, which proposed that the atom contains in its nucleus a number of positive nuclear charges that is equal to its ( atomic ) number in the periodic table.
Until these experiments, atomic number was not known to be a physical and experimental quantity.
That it is equal to the atomic nuclear charge remains the accepted atomic model today.

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