europium
/ju:'roupiəm/
Definition
- Noun:
- A chemical element: Europium is a metallic element belonging to the lanthanide series of the periodic table, known as a rare earth element. It is characterized by its ability to commonly form both bivalent (Eu²⁺) and trivalent (Eu³⁺) ions.
Usage Examples
- Noun:
- Europium is used in the phosphors of television screens and fluorescent lamps.
- The scientist isolated a sample of pure europium for the experiment.
Advanced Usage
- In scientific contexts: The term is used precisely to denote the element with atomic number 63 and symbol Eu.
- The luminescent properties of europium-doped materials are critical for certain laser applications.
Variants and Related Words
- Europium oxide (n): A compound of europium and oxygen.
- Europium oxide is a key material in red phosphors.
- Europium(III) ion (n): The trivalent cationic form of europium (Eu³⁺).
Synonyms
- Element 63: Referring to its atomic number.
- Rare earth metal: A broader category to which it belongs.
Related Phrases
- Doped with europium: A common phrase in materials science describing a host material that has had europium ions added to it.
- The crystal was doped with europium to enhance its red emission.
Noun
-
a bivalent and trivalent metallic element of the rare earth group
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