Einsteinium

Source: http://www.tabulka.cz/english/elements/show.asp?id=99

name Einsteinium
latin Einsteinium
french Einsteinium
german Einsteinium
symbol Es
proton number 99
atomic weight [252]
Pauling electronegativity 1.3
electronic configuration [Rn] 5f116d07s2
1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p65f116d07s2
melting point 1133 K, 860°C, 1580°F
boiling point -
group -
period 7
state (by 20°C) solid
oxidation states +3

Discoverer

Year of discovery Discoverer
1952 Albert Ghiorso and his coworkers at Berkeley


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