Thorium
Revision as of 21:46, 13 January 2007 by Jarogers2001 (talk | contribs)
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| Atomic symbol: | Th | |
| Atomic number: | 90 | |
| Group: | n/a | |
| Period: | 7 | |
| Series: | Actinides |
Thorium is a soft, very ductile, silver-gray, heavy, metallic element of the actinide series of elements.
