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63 Eu Europium

Lanthanoid, mass: 151.96 u, 2 stable isotopes (151, 153), abundance rank (earth/space): 60/75

Click image to magnify. Strongly oxidized piece of europium, 1 gram. Original size in cm: 0.5 x 2
Strongly oxidized europium Strongly oxidized europium, same piece
Europium is a very reactive metal, which actually has a silvery color, but oxidizes quickly in air. It is toxic and is the most ignoble of the lanthanoids after lanthanum. It has its most important application as red and blue luminescent substance, e.g in CRT television sets. The phenomenon fluorescence was named after fluorites with Eu2+ inclusores.

Weakly oxidized europium Weakly oxidized europium, same piece
Weakly oxidized europium, hence slightly yellowish. 1.5 grams, large piece 0.6 x 1.6 cm.

Fluorescing europium sulfate Europium sulfate
Europium sulfate, Eu2(SO4)3, a white salt (right), fluoresces red under ultraviolet light due to the Eu3+-ions (left). See also terbium.


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The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking (outside of the internet credit with url) to the according element page.


Page last changed on March 05. 2016

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