Difference between revisions of "Periodic table of the elements"
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| − | + | The '''periodic table of the elements''' is a diagrammatic tool to illustrate the scientific [[theory]] of [[periodicity]] in [[chemistry]], in which the [[element]]s have similar properties based on their position on the table. For example, the elements on the left of the table are all [[metal]]s. The table has a lot of predictive power, although there are many exceptions to the periodic properities. | |
| − | + | The periodic table was first developed by [[Russia|Russian]] [[chemistry|chemist]] [[Dimitri Mendeleev]]. Its layout accurately arranges elements by their [[electron]] configuration, atomic number, and chemical properties. Using the structure he created, Mendeleev predicted the existance of several elements; he was later proved to be correct. | |
[[Image:Periodic_table.jpg|thumb|center|750px|Periodic Table of the Elements]] | [[Image:Periodic_table.jpg|thumb|center|750px|Periodic Table of the Elements]] | ||
[[category:chemistry]] | [[category:chemistry]] | ||
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| + | [[Image:Aqw.jpg|center|thumb|750px|circular periodic table]] | ||
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| + | [[Category:Chemistry]] | ||
Revision as of 04:53, September 21, 2007
The periodic table of the elements is a diagrammatic tool to illustrate the scientific theory of periodicity in chemistry, in which the elements have similar properties based on their position on the table. For example, the elements on the left of the table are all metals. The table has a lot of predictive power, although there are many exceptions to the periodic properities.
The periodic table was first developed by Russian chemist Dimitri Mendeleev. Its layout accurately arranges elements by their electron configuration, atomic number, and chemical properties. Using the structure he created, Mendeleev predicted the existance of several elements; he was later proved to be correct.
File:Periodic table.jpg
Periodic Table of the Elements
