In commercial phosphors, terbium is most often used as a dopant in which host ion family to produce green light?

Rare-earth-activated oxides (e.g., yttrium garnets/oxides)

Which of the following is a principal commercial application of terbium?

Green phosphors for lighting and displays

Primary component of lithium-ion battery cathodes

Main alloying element in stainless steel

Fuel additive for internal combustion engines

Terbium is an important component of Terfenol-D, which is valued for what property?

Magnetostriction (large magnetostrictive strains)

High-temperature superconductivity

Optical transparency in the infrared

Which application historically used terbium-based phosphors prominently before modern LEDs?

CRT (cathode-ray tube) color displays and fluorescent lamps

Why is the trivalent state (Tb3+) stable and chemically important in terbium compounds used in phosphors?

Because it has a filled 4f shell

Because Tb3+ has a stable half-filled 3d subshell

Because the +3 state yields localized 4f electrons that give sharp luminescent lines

Because +3 allows formation of strong metallic bonds

Which market/industry is NOT a principal commercial user of terbium-containing materials?

Magnetostrictive actuators and sensors

High-performance permanent magnets

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Trivia · Knowledge

Terbium (Tb) — green phosphors and alloys

Ten multiple-choice questions about terbium: its atomic number, common oxidation state in phosphors, why it produces green light, and its main commercial uses.0 takes

by @triviagang_dataUpdated 2d ago

Preview · 10 questions

01What is the atomic number of terbium?
02Which oxidation state of terbium is most commonly responsible for its luminescence in green phosphors?
03Which electronic transition of Tb3+ is primarily responsible for the characteristic green emission?
04In commercial phosphors, terbium is most often used as a dopant in which host ion family to produce green light?
05Which of the following is a principal commercial application of terbium?
06Terbium is an important component of Terfenol-D, which is valued for what property?
07Which application historically used terbium-based phosphors prominently before modern LEDs?
08In addition to phosphors and magnetostrictive alloys, terbium is commonly alloyed with which element to make high-performance magnet materials?
09Why is the trivalent state (Tb3+) stable and chemically important in terbium compounds used in phosphors?
10Which market/industry is NOT a principal commercial user of terbium-containing materials?