Manganese

Manganese, if you please.

Basic Information

  • Symbol: Mn
  • Atomic Number: 25
  • Atomic Mass: 54.9380
  • # of Protons: 25
  • # of Neutrons: 30
  • # of Electrons: 25
  • Atomic Radius: 161 pm
  • Ionization Energy: 7.434 eV
  • Electronegativity: 1.55
  • Melting Point: 1245 degrees Celsius
  • Boiling Point: 2061 degrees Celsius
  • Normal Phase: Solid
  • Cost: $1.70/100g
  • Classification: Metal
  • Belongs to the Transition Metals family.

Interesting Facts

  1. Manganese is an essential trace nutrient in all forms of life.
  2. One source of manganese is in nodules on the ocean floor.
  3. Paints that were pigmented with manganese dioxide can be traces back 17,000 years.
  4. The average human body contains about 12g of manganese, found mostly in the skeleton.
  5. During World War II, manganese replaced most of the nickel in US coins, as nickel became scarce.
  • Origin of Name: Latin word "magnes" meaning "magnet".
  • Discovered by: Johan Gottlieb Gahn in 1774.
  • Electron Configuration: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^5
  • Orbital Diagram:

Main Uses

  • Steel alloys
  • Batteries
  • Ceramics
  • Pigments
  • Drying agents in black paints.