What is Holmium?

Holmium, the sixty-seventh element on the periodic table, is a bright, silvery lanthanide. It's a magnetic marvel and a laser specialist.

Atomic Number: 67

Symbol: Ho

Atomic Mass: 164.93 u

Category: Lanthanide

State at Room Temperature: Solid

Discovered By: Marc Delafontaine and Per Teodor Cleve (1878)

⚛️ Atomic Structure of Holmium

Holmium has sixty-seven protons, ninety-eight neutrons (in its only stable isotope, Holmium-165), and sixty-seven electrons, with eleven in its outer shell.

💡 Did you know? Holmium has the highest magnetic moment of any naturally occurring element!

🔬 Holmium Properties

Holmium is soft, malleable, and reactive. It melts at 1474°C (2685°F), is strongly magnetic, and oxidizes in air.

🧬 How Was Holmium Discovered?

In 1878, Swiss chemist Marc Delafontaine and Swedish chemist Per Teodor Cleve independently identified Holmium in erbium oxide, naming it after Stockholm (Holmia in Latin).

⚡ Uses of Holmium

💡 Fun Facts About Holmium

⚠️ Safety & Precautions

Holmium is reactive and can ignite as powder. It's mildly toxic; handle with gloves, avoid inhalation, and store in inert conditions.

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