Comparisons / Comparison of Mendelevium and Nobelium

Comparison of Mendelevium and Nobelium [S]ave

Attribute
Mendelevium
×

Nobelium
×
Atomic mass (u)258.09843259.101
Standard stateSolidSolid
Oxidation states
  • +2
  • +3
  • +2
  • +3
Electron configuration[Rn]7s²5f¹³[Rn]7s²5f¹⁴
Ionization energy (eV)6.586.65
Electronegativity (pauling scale)1.31.3
Melting point (K)11001100
Atomic number101102
Group nameActinideActinide
Discovered (year)19551957
1SymbolMdNo



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