Comparisons / Comparison of Mendelevium and Lawrencium

Comparison of Mendelevium and Lawrencium [S]ave

Attribute
Lawrencium
×

Mendelevium
×
Atomic mass (u)266.12258.09843
Standard stateSolidSolid
Oxidation states
  • +3
  • +2
  • +3
Electron configuration[Rn]7s²5f¹⁴6d¹[Rn]7s²5f¹³
Ionization energy (eV)-6.58
Electronegativity (pauling scale)1.31.3
Melting point (K)19001100
Atomic number103101
Group nameActinideActinide
SymbolLrMd
Discovered (year)19611955



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