Henry Moseley

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Henry Gwyn Jeffreys Moseley was an English Physicist who experimentally found out that the major properties of an element are found by the Atomic number and not by the atomic weight. He also firmly established the relationship between atomic number and the Charge of the atomic nucleus. Henry Moseley was educated at Trinity College, in Oxford. In 1910, at the age of 23, he was appointed lecturer in physics at Ernest Rutherford's laboratory. He studied under Rutherford …

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…in charge on the nucleus. He called this the atomic num! ber. In 1913, he published his results of his experiments. The results showed that ordering the elements would be by atomic number and not atomic weight. When finally atoms were arranged according to atomic number, the problems of Mendeleev's periodic table had vanished. Because of Henry Gwyn Jeffereys Moseley's work, our modern periodic table is based on the atomic number of the elements. ------------------------------------------------------------------------ **Bibliography**