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

History

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.