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Atomic Number:111
Atomic Symbol:Rg
Atomic Weight:280Electron Configuration:[Rn] 5f14 6d9 7s2
Shells:2,8,18,32,32,17,2Filling Orbital:
Melting Point:Unknown
Boiling Point:Unknown
Description:Radioactive metal.


Roentgenium was first made by research scientists at the Heavy Ion Research Laboratory in Darmstadt, Germany in 1994. The scientists bombarded nickel with bismuth in a heavy ion accelerator. The element is named after physicist Wilhelm Conrad R??ntgen who discovered X-rays in 1895.

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