Einsteinium

Symbol EsAtomic number 99...
Atomic mass
252
 Thermal conductivity
0.1
Atomic radius
...
 Covalent radius
...
Density
...
 Atomic volume
...
Melting point
...
 Oxidation states
...
Boiling point
...
 Stable isotopes
0
Heat of vapor.
...
 Electronegativity
1.3
Heat of fusion
...
 First ionization
6.42
Specific heat
...
 Electrical conduct.
...
Electron configuration

General descriptionNuclear data
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Einsteinium

Named in honor of Albert Einstein, this element was discovered in 1952 in the debris produced by a thermonuclear explosion . The isotope first identified had an atomic mass of 253 and a half-life of 20 days. Subsequently, a relatively long-lived isotope, einsteinium-254, was prepared by irradiating plutonium in a nuclear reactor

Atomic dataNuclear data
 Index

Periodic Table

Chemistry concepts

Reference
Pauling
Ch. 29
 
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Einsteinium Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
99
252
252.082945
234.7651
1879.2
5
...
1.29y
a,EC
6.74,1.12
99
254
254.088019
236.6328
1890.7
7
...
275d
a
6.62
Atomic data
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
 
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