Rutherfordium (Rf) — Atomic Data, Electron Shells & Reactions

Atomic Number (Z) 104 IUPAC Symbol Rf Standard Atomic Weight 267 g/mol Period / Group / Block 7 / 4 / d-block Condensed Electron Config [Rn] 5f14 6d2 7s2 Full Subshell Config 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d2 7s2 Principal Shell Occupancy [2, 8, 18, 32, 32, 10, 2] Pauling Electronegativity — First Ionization Energy 580 kJ/mol Covalent Radius 157 pm Melting Point 2400 K (2126.85 °C) Boiling Point 5800 K (5526.85 °C) Density 23.2 g/cm³ Oxidation States +4