Transition metal

Roentgenium

Roentgenium (Rg) has atomic number 111. PubChem classifies it as transition metal.

Atomic number

111

Symbol

Rg

Atomic weight (source value)

282.169

Electron configuration

[Rn]7s2 5f14 6d9 (predicted)

Standard state

Expected to be a Solid

Electronegativity (Pauling)

Not provided

Melting point (K)

Not provided

Boiling point (K)

Not provided

Density (g/cm³)

Not provided

Oxidation states

5, 3, 1, -1

Understanding this entry

Atomic number is the number of protons in the nucleus. Properties are reference values and may depend on conditions and measurement conventions. An atomic weight is not the mass of every isotope. For elements without a standard atomic weight, a source may report an isotope mass number. Blank source values are shown as unavailable rather than estimated.

Further reading and reference: NIH PubChem source dataset ↗. Values and educational summaries are not a substitute for specialised advice.