Quizzes · Knowledge
Europium (Eu) — phosphors and red/blue emitters: Multiple Choice
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- 01What is the atomic number of europium?
- 02Which oxidation state of europium produces sharp red luminescence in phosphors?
- 03In which year was europium first identified (isolated by its discoverer)?
- 04Who is credited with the discovery of europium?
- 05In white LEDs, europium is most often used as a dopant to provide which color component?
- 06The name 'europium' is derived from:
- 07What is the most common oxidation state of europium in its compounds?
- 08Europium-doped yttrium oxide (Y2O3:Eu) is primarily used in which application?
- 09Europium is a member of which group of elements?
- 10Which oxidation state of europium typically gives broad blue/green emission in phosphors?