Roentgenium

Roentgenium (former temporary name: unununium or eka-gold) is a chemical element in the periodic table that has the symbol Rg (formerly temporarily Uuu) and atomic number 111 making it one of the super-heavy atoms. It is a synthetic element whose longest-lived isotope has a mass of 280 and a half-life of 3.6 seconds. Due to its presence in Group 11 it is a transition metal and so probably would appear as a heavy, solid, shiny metal. One cannot speculate on whether it would be colored like gold or not.

Related Topics:
Unununium - Chemical element - Periodic table - Atomic number - Super-heavy atom - Synthetic element - Isotope - Half-life - Transition metal - Gold

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