Periodic Table of the Elements
Periodic Table




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name Roentgenium
latin Roentgenium
french Roentgenium
german Roentgenium
symbol Rg
proton number 111
atomic weight [272]
Pauling electronegativity -
electronic configuration [Rn] 5f146d107s1
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melting point -
boiling point -
group 11
period 7
state (by 20°C) solid
oxidation states -
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discussion board
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Year of discovery Discoverers
1994 S. Hofmann
V. Ninov
F. P. Hessberger
Peter Armbruster
H. Folger
Gottfried Münzenberg
and others from GSI (Darmstadt, Germany)

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