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erbium
Atomic number:
68
Atomic weight:
167.26
Symbol:
Er
Group number:
(lanthanide)
Electronic configuration:
[Xe].4f12.6s2
Physical data
Standard state:
solid at 298 K
Colour:
silvery white
Density of solid at ambient temperature/kg m-3:
9066
Molar volume/cm3:
18.46
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