Periodic table of the elements
FermiumMendeleviumNobelium
101
Md
Mendelevium
(258)
2
8
18
32
31
8
2
101
Md
Mendelevium
(258)
2
8
18
32
31
8
2
General
NameMendelevium
SymbolMd
Number101
Chemical seriesActinides
Group / Period0 / 7
Blockf-block
CAS registry number7440-11-1

Mendelevium is a radioactive element

Physical properties
Statesolid
Density g/cm3
Melting point1100 K (827°C, 1521°F)
Boiling point
Critical point

Atomic properties
Atomic Weight(258) g/mol
Crystal structure
Electronegativity1.30
Atomic radius
Atomic radius (calculated)
Electron configuration[Rn] 5f13 7s2
Electrons per shell2, 8, 18, 32, 31, 8, 2
Number of protons101
Number of neutrons157

Other languages
SpanishMendelevio
PortugueseMendelévio
FrenchMendélévium
GermanMendelevium
ItalianMendelevio
RussianМенделевий
PolishMendelew
Chinese
Arabicمندليفيوم
TurkishMendelevyum
DutchMendelevium


Periodic table of the elements
FermiumMendeleviumNobelium