Periodic Table of the Elements
Periodic Table




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name Erbium
latin Erbium
french Erbium
german Erbium
symbol Er
proton number 68
atomic weight 167.26
Pauling electronegativity 1.24
electronic configuration [Xe] 4f125d06s2
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melting point 1770 K, 1497°C, 2726°F
boiling point 3141 K, 2868°C, 5194°F
group -
period 6
state (by 20°C) solid
oxidation states +3
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Year of discovery Discoverer
1842 Carl G. Mosander

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