Periodic table

 

 

Atomic number:68

Group numbers:3

Period:6

Electronic configuration:[Xe] 4f¹² 6s²

Formal oxidation number:+3

Electronegativities:1.24

Atomic radius / pm:173.4

Relative atomic mass:167.259 ± 0.003

 

Erbium was discovered by Carl Gustaf Mosander (SE) in 1843. Named after Ytterby, a village in Sweden. It is a soft, malleable, silvery metal that reacts slowly with water and dissolves in acids. Metal ignites and burns readily. Erbium is found with other heavier rare earths in xenotime and euxenite. Erbium oxide is used in ceramics to obtain a pink glaze. There are also a few uses in the nuclear industry and as an alloying agent for other exotic metals.

PHYSICAL PROPERTIES

Density / g dm^-3:9066 (298 K)

Molar volume / cm³mol^-1:18.45 (298 K)

Electrical resistivity / μΩcm:107 (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m^-1K^-1:14.3

Melting point / °C:1529

Boiling point / °C:2868

Heat of fusion / kJ mol^-1:17.2

Heat of vaporization / kJ mol^-1:280

Heat of atomization / kJ mol^-1:318.32

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:589.31

Second ionization energy / kJ mol^-1:1151.08

Third ionization energy / kJ mol^-1:2194.09

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:2.2

in the oceans / ppm:0.0000002

CRYSTALLOGRAPHIC DATA

ISOTOPES

REDUCTION POTENTIALS

 

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Citing this page:

Generalic, Eni. "Erbium." EniG. Periodic Table of the Elements. 16 May 2013. KTF-Split. {Date of access}. <http://www.periodni.com/er.html>.