🔹 Basic Information

• Element Name: Terbium
• Discovered By: Carl Gustaf Mosander
• Year of Discovery: 1843
• Category: Lanthanide (Rare Earth Metal)
• Group: f-block
• State at Room Temperature: Solid (silvery-white metal) ⚙️

Terbium is one of the rare earth elements known for its bright green glow in some compounds.

🔸 Chemical Properties

• Chemical Symbol: Tb
• Atomic Number: 65
• Atomic Mass: ~158.93 u
• Valency: +3, sometimes +4
• Electronic Configuration: [Xe] 4f⁹ 6s²

Terbium is moderately reactive and forms colorful compounds, especially oxides that glow under UV light.

📘 Basic Things to Know

Terbium is mainly used in lighting and displays because it helps produce bright green phosphorescent colors.

🤔 Interesting Facts

• Named after the Swedish village Ytterby, the same place several rare earth elements got their names! 🏡
• Terbium compounds give off a bright green light, which is used in TV and LED screens. 💚
• It’s also used to improve the strength of magnets. 🧲
• Terbium is soft and silvery but doesn’t react too quickly with air at room temperature.
• Used in fiber optic devices and fuel cells.

🔧 Common Uses

• Green Phosphors: For color TV tubes, LEDs, and fluorescent lamps. 📺💡
• Magnets: In strong magnets used in headphones, microphones, and electric motors. 🎧🔊
• Fuel Cells: Used in some types of fuel cells that convert energy efficiently. 🔋
• Research: In lasers and advanced materials science. 🔬

📚 Conclusion

Terbium is a rare but important metal that helps bring bright green colors to our screens and makes magnets stronger. For students, it’s a great example of how elements light up our world — literally! 💚✨