Atomic Element Z = 111 • Transition Metal

Roentgenium (Rg) — Atomic Data, Electron Shells & Reactions

Roentgenium (symbol Rg, atomic number 111) has a standard atomic weight of 282 u and ground-state configuration [Rn] 5f14 6d9 7s2.

← 110 Ds Full Atlas 112 Cn →

IUPAC Physical & Atomic Properties

Atomic Number (Z) 111 IUPAC Symbol Rg Standard Atomic Weight 282 g/mol Period / Group / Block 7 / 11 / d-block Condensed Electron Config [Rn] 5f14 6d9 7s2 Full Subshell Config 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d9 7s2 Principal Shell Occupancy [2, 8, 18, 32, 32, 17, 2] Pauling Electronegativity — First Ionization Energy 1020 kJ/mol Covalent Radius 121 pm Melting Point — Boiling Point — Density 28.7 g/cm³ Oxidation States +3, +1

Bohr Shell Diagram & Balanced Reactions

Rg (Z=111) — Valence shell highlighted in vermilion