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| | The Periodic Table |
 | | Identify elements in various regions of the Periodic Table: metals, nonmetals, metalloids, alkali metals, alkaline earth metals, halogens, noble gases, transition elements, inner transition elements, lanthanides and actinides. |
 | | The transition elements or transition metals, are in the central section of periodic table (numbers 21-30 and 39-48 and 71-80 and 103 up). |
 | | The transition elements vary in the ways they can attach to oxygen, but in a manner that is not readily apparent by the simple scheme. |
| gpc.edu /~pgore/PhysicalScience/Periodic-table.html (1468 words) |
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