MetaXearch > / Chemistry / Elements / Roentgenium / Apsidium: Roentgenium Basic information and atomic structure. (infos) IUPAC: Roentgenium A note about confirmation of synthesis of the element 111. (infos) Wikipedia: Roentgenium Basic physical and historical information. (infos) Help build the largest human-edited directory on the web. Submit a Site - Open Directory Project - Become an Editor

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