What Is Bismuth?

Bismuth, the eighty-third element on the periodic table, is a brittle, iridescent post-transition metal. It's heavy yet surprisingly gentle.

Atomic Number: 83

Symbol: Bi

Atomic Mass: 208.98 u

Category: Post-Transition Metal

State at Room Temperature: Solid

Discovered By: Claude Geoffroy (1753)

⚛️ Atomic Structure of Bismuth

Bismuth has eighty-three protons, one hundred twenty-six neutrons (in its most common isotope, Bismuth-209), and eighty-three electrons, with five in its outer shell.

  • 🟢 Protons: 83
  • 🔴 Neutrons: 126 (Most common isotope, Bismuth-209)
  • 🟡 Electrons: 83

💡 Did you know? Bismuth crystals grow in stunning, rainbow-like staircases!

🔬 Bismuth Properties

Bismuth is brittle, dense, and has a low melting point of 271.5°C (520.7°F). It resists corrosion and expands when it solidifies.

🧪 How Was Bismuth Discovered?

In 1753, French chemist Claude Geoffroy distinguished Bismuth from lead and tin, though it was known earlier. Its name may derive from German "wismut" (white mass).

⚡ Uses of Bismuth

  • 💊 Medicine: Stomach relief (e.g., Pepto-Bismol).
  • 🔧 Alloys: Low-melt solders.
  • 🎨 Pigments: Cosmetics and paints.
  • 🔬 Tech: Fire sprinklers.

💡 Fun Facts About Bismuth

  • 🌈 Iridescent crystals.
  • 💧 Expands when solid.
  • 🩺 Soothes tummies.
  • ⚖️ Least toxic heavy metal.

⚠️ Safety & Precautions

Bismuth is relatively non-toxic but can irritate as dust. Handle with gloves, avoid inhalation, and store safely.

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