Development of the Periodic Table

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  • Created by: iqraa
  • Created on: 02-05-12 10:11

Before protons and neutrons were discovered the periodic table was arranged in order of atomic mass and the chemical properties of elements.

Newlands Law of Octaves:

In 1864, Newlands had a go at creating a periodic table. He arranged all the elements, known at the time, into a table in order of relative atomic mass. He notices that every 8th element

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