25

Mn

Manganese
51.9961 (6)
 Historical Information

Manganese metal was isolated by Gahn in 1774. He reduced the dioxide (MnO2, as the mineral pyrolusite) with charcoal (essentially carbon) by heating and the result was a sample of the metal manganese. Origin of name: from the Latin word "magnes" meaning "magnet", or "magnesia nigri" meaning "black magnesia"

Basic Information Shells
  • Name: Manganese
  • Symbol: Mn
  • Atomic number: 25
  • Atomic weight:51.9961 (6)
  • Standard state: solid at 298 K
  • Group in periodic table: 7
  • Group name:none
  • Period in periodic table: 4
  • Block in periodic table: d-block
  • Classification: Metallic
 manganese
Uses Trivia
  • important in the utilisation of vitamin B1
  • the permanganate is a powerful oxidising agent and is used in quantitative analysis and in medicine

Manganese metal is gray-white, resembling iron, but is harder and very brittle. The metal is reactive chemically, and decomposes cold water slowly. Manganese is widely distributed throughout the animal kingdom.