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The history of the periodic table
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| Submitted: Wed Oct 20 2004
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Chemistry Open Book Paper: 2852 In this day in age we have the privilege to look at a structured periodic table, which displays all the known elements and substances that are on our universe. However it hasn't always been like that and over time the modern periodic table that we see today has developed. One of the ways in which the modern periodic table differs from earlier attempts to classify elements is that in 1817 a German scientist called Johann Dobereiner (left) tried to classify elements using their atomic mass then called atomic weights). Dobereiner was the first to attempt to classify elements. Dobereiner placed elements which had similar properties in sets of three which he called the law of triads. He realised that the middle element had properties that were an average of the other two members when ordered by the atomic weight. In 1863 the English chemist called John...
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