Radon (Rn) — Atomic Data, Electron Shells & Reactions

Atomic Number (Z) 86 IUPAC Symbol Rn Standard Atomic Weight 222 g/mol Period / Group / Block 6 / 18 / p-block Condensed Electron Config [Xe] 4f14 5d10 6s2 6p6 Full Subshell Config 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 Principal Shell Occupancy [2, 8, 18, 32, 18, 8] Pauling Electronegativity 2.2 First Ionization Energy 1037 kJ/mol Covalent Radius 150 pm Melting Point 202 K (-71.15 °C) Boiling Point 211.5 K (-61.65 °C) Density 0.00973 g/cm³ Oxidation States 0, +2