Lutetium - Periodic Table of Videos

TL;DR

Lutecium is a rare element that was discovered in 1907 and is known for its beautiful red color when burned.

Transcript

we're going to tell you about lutecium element number 71. it's quite a bit of argument whether it's the last of the rare earths or a member of group 3 in the periodic table but we'll come to that later we're going to show you some demonstrations particularly a terrific red color that you can get from it the element was discovered in 1907 by two che... Read More

Key Insights

• ❓ Lutecium was discovered in 1907 by George Urbain and Carl Auer von Welsbach.
• 😪 It is known for its brilliant red color when burned.
• 😒 Lutecium has limited practical applications, including use in LED lighting, prostate cancer treatment, and dating meteorites.
• 🚰 The element's placement on the periodic table has been a subject of debate.
• ⛔ Lutecium is expensive and rare, limiting the size of experiments that can be conducted with it.
• 🖐️ Its discovery played a role in the debate over the purity of isolated elements at the time.
• 😪 Lutecium's red color emission makes it visually appealing and adds to its scientific interest.

Questions & Answers

Q: How was lutecium discovered and who gets the credit for its discovery?

Lutecium was discovered in 1907 by two chemists, George Urbain and Carl Auer von Welsbach, who both independently separated it from a mixture of other rare earths. Urbain ultimately received the credit and naming rights for the element.

Q: What is the significance of lutecium's red color when burned?

Lutecium gives off a vibrant red color when burned, which is a characteristic feature of many elements. This unexpected color adds to the element's intrigue and makes it visually appealing.

Q: What are the practical applications of lutecium?

Lutecium is used in the production of LEDs to create a different color emission. It is also used in the treatment of prostate cancer, where a radioactive isotope of lutecium can be targeted to tumors. Additionally, lutecium isotopes can be used to date meteorites.

Q: Where does lutecium fit in the periodic table?

There is ongoing debate about lutecium's placement in the periodic table. Older tables position it in group 3, while more modern tables place it at the end of the rare earth elements. The actual placement does not impact its properties significantly.

Summary & Key Takeaways

• Lutecium, element number 71, is often debated whether it is the last of the rare earths or a member of group 3 in the periodic table.

• It was discovered simultaneously by French chemist George Urbain and German chemist Carl Auer von Welsbach.

• Lutecium is expensive and has limited practical applications, including its use in LED lighting, prostate cancer treatment, and dating meteorites.