111
Rg
282
Roentgenium
Element 111 · 282 u · d-block
unknown
Named after Wilhelm Roentgen, discoverer of X-rays. Expected to be a noble metal like gold.
Phase (STP)
Solid
Melting Point
—
Boiling Point
—
Density
28.7 g/cm³
Electronegativity
—
Atomic Radius
—
Ionization Energy
—
Electron Affinity
—
Discovered
1994 · Peter Armbruster
Electron Configuration
[Rn] 5f14 6d9 7s2
Electron Orbitals
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