de en fr hr it es
Neighborhood
Dy
66
Ho
67
Er
68
Cf
98
Es
99
Fm
100
 
 
 

 

Periodic table

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Einsteinium

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Einsteinium

fr  French

Einsteinium

hr  Croatian

Einsteinij

it  Italian

Einsteinio

es  Spanish

Einsteinio

 

Es
Es
Einsteinium

PERIODIC TABLE OF THE ELEMENTS

EINSTEINIUM

TRANSITION ELEMENT:
ACTINIDE

 

Atomic number:99

Group numbers:3

Period:7

Electronic configuration:[Rn] 5f11 7s2

Formal oxidation number:+3

Electronegativities:-

Atomic radius / pm:186

Relative atomic mass:[252]

 

Einsteinium was discovered by Albert Ghiorso & Berkely Lab. (US) in 1952. Named in honour of Albert Einstein. It is a synthetic radioactive metal. Einsteinium was made by bombarding uranium with neutrons.

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:860

Boiling point / °C:-

Heat of fusion / kJ mol-1:-

Heat of vaporization / kJ mol-1:-

Heat of atomization / kJ mol-1:150

IONIZATION ENERGIES

First ionization energy / kJ mol-1:619.44

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

hexagonal

Crystal structure:

hexagonal

Unit-cell dimensions / pm:

-

Space group:

-

ISOTOPES

IsotopeRelative atomic massMass percent (%)

REDUCTION POTENTIALS

Balanced half-reaction Eo / V

 

98 Californium <=
99 Einsteinium
=> 100 Fermium