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1
Description
Europium's atomic number is 63 and its symbol is Eu. Europium is one of the rarest rare earth elements on earth as well as the most reactive of the lanthanides. When europium oxides it turns from yellow to green to light yellow powder. It's...
Reviews
5.0
2 ratings
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It’s a very decorative element cube; it looks great in the display case next to the plutonium and uranium, my son loves it! But I’m still missing a cesium cube to make me completely happy...