What is Manganese?

Manganese, the twenty-fifth element on the periodic table, is a hard, brittle transition metal with a silvery-gray appearance. It's critical in steelmaking and biology.

Atomic Number: 25

Symbol: Mn

Atomic Mass: 54.938 u

Category: Transition Metal

State at Room Temperature: Solid

Discovered By: Johan Gottlieb Gahn (1774)

⚛️ Atomic Structure of Manganese

Manganese has twenty-five protons, thirty neutrons (in its only stable isotope, Manganese-55), and twenty-five electrons, with seven in its outer shell.

  • 🟢 Protons: 25
  • 🔴 Neutrons: 30 (Stable isotope, Manganese-55)
  • 🟡 Electrons: 25

💡 Did you know? Manganese-53, a radioactive isotope, is used to study ancient ocean chemistry!

🔬 Manganese Properties

Manganese is hard, brittle, and oxidizes in air. It has a high melting point (1246°C / 2275°F) and forms colorful compounds in various oxidation states.

🧬 How Was Manganese Discovered?

In 1774, Swedish chemist Johan Gottlieb Gahn isolated Manganese by reducing manganese dioxide with carbon, building on earlier work by Carl Wilhelm Scheele.

⚡ Uses of Manganese

  • 🏗️ Steel: Improves strength and toughness in alloys.
  • 🔋 Batteries: Manganese dioxide in alkaline batteries.
  • 🌾 Agriculture: Micronutrient in fertilizers.
  • 🎨 Pigments: Brown and black hues in paints and ceramics.

💡 Fun Facts About Manganese

  • 🧬 Essential for human metabolism and bone health.
  • 🌍 Abundant in ocean nodules on the seafloor.
  • 🔥 Burns with a white-green flame when ignited.
  • 📜 Named from Latin "magnes," meaning "magnet" (due to magnetic ores).

⚠️ Safety & Precautions

Manganese is non-toxic in solid form, but inhaling its dust or fumes (e.g., from welding) can harm the nervous system. Use proper ventilation.

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