Meitnerium (Mt) — Atomic Data, Electron Shells & Reactions

Atomic Number (Z) 109 IUPAC Symbol Mt Standard Atomic Weight 278 g/mol Period / Group / Block 7 / 9 / d-block Condensed Electron Config [Rn] 5f14 6d7 7s2 Full Subshell Config 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d7 7s2 Principal Shell Occupancy [2, 8, 18, 32, 32, 15, 2] Pauling Electronegativity — First Ionization Energy 800 kJ/mol Covalent Radius 129 pm Melting Point — Boiling Point — Density 37.4 g/cm³ Oxidation States +3, +1