Mendelevium

Unknown
258
[Rn] 5f137s2
258Md, 260Md
7
f
101
2, 8, 18, 32, 31, 8, 2
634.87
Md
Unknown
827°C, 1521°F, 1100 K
Unknown
Albert Ghiorso and colleagues
1955
7440-11-1
22385
More Information
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Atomic Data

Atomic Radiues, Non-bonded (A): 2.46
Electron Affinity (kJ mol-1): Unknown
Covalent Radiues (A): 1.73
Electronegativity (Pauling Scale): Unknown
Ionisation Energies (kJ mol-1) 1st 2nd 3rd 4th 5th 6th 7th 8th
634.87 - - - - - - -

Oxidation States and Isotopes

Common oxidation states 1
Isotope Atomic Mass Natural Abundance Half Life Mode of Decay
258Md 258.098 - 51.5 d α
- sf
260Md 260.104 - ~ 27.8 d sf