de en fr hr it es
Neighborhood
Er
68
Tm
69
Yb
70
Fm
100
Md
101
No
102
 
 
 

 

Periodic table

de  German

Mendelevium

en  English

Mendelevium

fr  French

Mendelévium

hr  Croatian

Mendelevij

it  Italian

Mendelevio

es  Spanish

Mendelevio

 

Md
Md
Mendelevium

PERIODIC TABLE OF THE ELEMENTS

MENDELEVIUM

TRANSITION ELEMENT:
ACTINIDE

 

Atomic number:101

Group numbers:3

Period:7

Electronic configuration:[Rn] 5f13 7s2

Formal oxidation number:+2 +3

Electronegativities:-

Atomic radius / pm:-

Relative atomic mass:[258]

 

Mendelevium was discovered by Albert Ghiorso, Bernard G. Harvey, Gregory R. Choppin, Stanley G. Thompson, and Glenn T. Seaborg (US) in 1955. Named in honour of Dimitri Mendelejev, the Russian chemist who devised the periodic table. It is a synthetic radioactive metal. With extremely limited amounts of Mendelevium ever being synthesized it does not have any uses outside of scientific research capacities, so don't expect to find it powering a nuclear electric wheelchair or mobility scooter anytime soon. Mendelevium was made by bombarding einsteinium with helium ions.

PHYSICAL PROPERTIES

Density / g dm-3:-

Molar volume / cm3mol-1:-

Electrical resistivity / μΩcm:- (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m-1K-1:-

Melting point / °C:827

Boiling point / °C:-

Heat of fusion / kJ mol-1:-

Heat of vaporization / kJ mol-1:-

Heat of atomization / kJ mol-1:116

IONIZATION ENERGIES

First ionization energy / kJ mol-1:634.88

Second ionization energy / kJ mol-1:-

Third ionization energy / kJ mol-1:-

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:-

in the oceans / ppm:-

CRYSTALLOGRAPHIC DATA

 -

Crystal structure:

-

Unit-cell dimensions / pm:

-

Space group:

-

ISOTOPES

IsotopeRelative atomic massMass percent (%)

REDUCTION POTENTIALS

Balanced half-reaction Eo / V

 

100 Fermium <=
101 Mendelevium
=> 102 Nobelium