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History of the Periodic Table: Difference between revisions
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→The Modern Periodic Law
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[[File:Henry Moseley.jpg|left|thumb|150px|Henry Gwyn Jeffreys Moseley (1887-1915)]] | [[File:Henry Moseley.jpg|left|thumb|150px|Henry Gwyn Jeffreys Moseley (1887-1915)]] | ||
Although Mendeleev's [[periodic table]] was brilliant, there were still some things wrong about it. The way that the elements were arranged still did not always group the elements that were similar. One of Ernst Rutherford's assistants, Henry Moseley, suggested that they develop a way to count the number of [[protons]] in an atom's [[nucleus]]. Once he created a way to do this, he realized they needed to revise the [[periodic table]] to make it more accurate, now that they could find the number of [[protons]] in an atom. He changed the [[periodic table]] and the | Although Mendeleev's [[periodic table]] was brilliant, there were still some things wrong about it. The way that the elements were arranged still did not always group the elements that were similar. One of Ernst Rutherford's assistants, Henry Moseley, suggested that they develop a way to count the number of [[protons]] in an atom's [[nucleus]]. Once he created a way to do this, he realized they needed to revise the [[periodic table]] to make it more accurate, now that they could find the number of [[protons]] in an atom. He changed the [[periodic table]] and the periodic law. The modern periodic law states, ''The properties of elements vary with their atomic numbers in a periodic way''. <ref name=BJU/> | ||
== Artificial Elements == | == Artificial Elements == | ||
