yttrium
- Scope note
- Chemical element having symbol Y and atomic number 39. Yttrium resembles lanthanide metals very closely and is often classified as a ‘rare earth element.' Yttrium’s most important use is for making the phosphors used in television screen displays and in LEDs. Yttrium phosphors emit a clear red light when excited by electrons.
- Date of creation: 22-Apr-2024
Accepted term: 22-Apr-2024