ASCII PERIODIC TABLE OF THE ELEMENTS
Es
Relative atomic mass: [252]
English: Einsteinium
French: Einsteinium
Croatian: Einsteinij
German: Einsteinium
Italian: Einsteinio
Spanish: Einstenio
Atomic number: 99
Group numbers: 3
Period: 7
Standard state (20 oC): solid
Discovery: 1952 Albert Ghiorso & Berkely Lab. (US)
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.
Electronic configuration: [Rn] 5f11 7s2
Formal oxidation number: +3
Atomic radius: 186 pm
Electronegativities: -
Thermal conductivity: - W/(m K)
Electrical resistivity (20 oC): - microOhm cm
Melting point: 860 oC
Boiling point: - oC
Heat of fusion: - kJ/mol
Heat of vaporization: - kJ/mol
Heat of atomization: 150 kJ/mol
98Cf <= 99Es => 100Fm
ASCII Periodic Table of the Elements
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6 Jan. 2020
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