What is Osmium?

Osmium, the seventy-sixth element on the periodic table, is a lustrous, bluish-white transition metal. It's the densest naturally occurring element.

Atomic Number: 76

Symbol: Os

Atomic Mass: 190.23 u

Category: Transition Metal

State at Room Temperature: Solid

Discovered By: Smithson Tennant (1803)

⚛️ Atomic Structure of Osmium

Osmium has seventy-six protons, one hundred fourteen neutrons (in its most common isotope, Osmium-192), and seventy-six electrons, with eight in its outer shell.

  • 🟢 Protons: 76
  • 🔴 Neutrons: 114 (Most common isotope, Osmium-192)
  • 🟡 Electrons: 76

💡 Did you know? Osmium is twice as dense as lead!

🔬 Osmium Properties

Osmium is hard, brittle, and extremely dense. It melts at 3033°C (5491°F), resists corrosion, and has a faint blue tint.

🧪 How Was Osmium Discovered?

In 1803, English chemist Smithson Tennant isolated Osmium from platinum residues, naming it from the Greek "osme" (smell) due to its pungent oxide.

⚡ Uses of Osmium

  • 🖋️ Pens: Fountain pen nibs.
  • 🔧 Alloys: Wear-resistant parts.
  • 🔬 Instruments: Precision tools.
  • 💡 Tech: Electrical contacts.

💡 Fun Facts About Osmium

  • ⚖️ Densest element ever.
  • 👃 Smelly oxide.
  • 🔵 Subtle blue hue.
  • ✍️ Scratches history.

⚠️ Safety & Precautions

Osmium is stable, but its oxide is toxic and volatile. Handle with gloves, avoid inhalation, and store in a sealed, ventilated area.

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