111
Rg
roentgenium
[282]

General properties

Group
group 11
Period
period 7
Category
transition metals
Standard atomic weight
-
Melting point
unknown
Boiling point
unknown
Phase at STP
solid (predicted)

Additional properties

Block
d-block
Electron configuration
[Rn] 5f¹⁴ 6d⁹ 7s² (predicted)
Electrons per shell
2, 8, 18, 32, 32, 17, 2
Electronegativity
Density
28.7 g/cm³ (predicted)
Oxidation states
(−1), (+1), (+3), (+5), (+7) (parenthesized: prediction)
CAS Number
54386-24-2