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...ORIUM.png|200px|thumb|Figure 1. Thorium, [[numéro atomique]] 90 et [[poids atomique]] 232,0381.<ref>Made internally by a member of the Energy Education team. I

...g|200px|thumb|Figure 1. L'uranium, [[numéro atomique]] de 92 et un [[poids atomique]] de 238,02891.<ref>Made internally by a member of the Energy Education tea