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The Periodic Table |
 | | The first major revision of the entire periodic table was carried out by Henry Gwyn-Jeffries Moseley, an English physicist who began his research under Ernest Rutherford. |
| | In 1914, Moseley showed that each atomic nucleus could be assigned a number that was equal to the number of units of positive charge (later identified as “protons”) associated with it. |
| | Once the periodic table was reorganized according to this atomic number instead of atomic weight, the few discrepancies in Mendeleev's system disappeared. |
| www.infoplease.com /ipa/A0905215.html (1002 words) |
