History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table •...
Transcript of History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table •...
![Page 1: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/1.jpg)
History of the Periodic Table
November 15, 2010 Chapter 6
![Page 2: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/2.jpg)
History of the Periodic Table
• Aristotle ~330 B.C. • Four element theory:
– Earth, Fire, Water, Air
![Page 3: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/3.jpg)
History of the Periodic Table • Antoine Lavoisier
~1770-1789 • Wrote the first list of
elements containing 33 elements
• Distinguished between metals and non-metals
![Page 4: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/4.jpg)
History of the Periodic Table
• Jons Jakob Berzelius~ 1828
• Developed a table of atomic weights
• Introduced letters to symbolize elements
![Page 5: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/5.jpg)
History of the Periodic Table
• Johann Döbereiner ~ 1829
• Developed 'triads', groups of 3 elements with similar properties
– Li, Na & K – Ca, Sr & Ba – Cl, Br & I
.
![Page 6: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/6.jpg)
History of the Periodic Table
• John Newlands ~1864 • The known elements (>60) were
arranged in order of atomic weights • Observed similarities between the first
and ninth elements, the second and tenth elements etc
• He proposed the 'Law of Octaves'
![Page 7: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/7.jpg)
History of the Periodic Table
• Lothar Meyer ~1869 • Compiled a Periodic
Table of 56 elements based on the periodicity of properties such as molar volume when arranged in order of atomic weight
![Page 8: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/8.jpg)
History of the Periodic Table
• Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but
arranged 'periodically' with elements with similar properties under each other
• Gaps were left for elements that were unknown at that time and their properties predicted (the elements were gallium, scandium and germanium)
• The order of elements was re-arranged if their properties dictated it
![Page 9: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/9.jpg)
History of the Periodic Table
• William Ramsay ~1894
• Discovered the Noble Gases
![Page 10: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/10.jpg)
History of the Periodic Table
• Henry Moseley ~1913 • Determined the atomic number of each of the
elements • He modified the 'Periodic Law' to read that the
properties of the elements vary periodically with their atomic numbers
• 1914:Predicted that there were 3 unknown elements between aluminum and gold
• Concluded there were only 92 elements up to and including uranium
![Page 11: History of the Periodic Table - Oak Park Independent€¦ · History of the Periodic Table • Dmitri Mendeleev ~ 1869 • Produced a table based on atomic weights but arranged 'periodically'](https://reader030.fdocuments.us/reader030/viewer/2022040309/5f2d1a0ecd2ec5662242e262/html5/thumbnails/11.jpg)
History of the Periodic Table
• Glenn Seaborg ~1940 • Synthesized transuranic elements
– The elements after uranium #92 in the periodic table
– Also part of the Actinides