Mn

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Manganese

• Mn
• 54.9380
• Manganese

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Properties

• Magnesium has a melting point of 1244/-3C,
  boiling point of 1962
• Its a hard and brittle
• Manganese metal is ferromagnetic (only) after
  special treatment.
• There are four allotropic forms of manganese.
  The alpha form is stable at normal temperatures.
• The gamma form changes to the alpha form is soft
  flexible and easily cut at ordinary temperature.
  
• Color gray-white metal
• Is chemically reactive
• Slowly decomposes in cold water.

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Uses

• Used to form many important alloys.
• In steel, manganese makes better for rolling and
  giving qualities, strength, toughness, stiffness,
  wear resistance, hardness, and harden ability.
• With aluminum and antimony, especially with
  small amounts of copper, it becomes highly
  ferromagnetic alloys. Manganese metal is
  ferromagnetic only after special treatment
• The dioxide is used in the preparation of
  oxygen, chlorine, and in drying black paints.
• The dioxide is used as a depolarizer in dry
  cells, and is used to "decolourise" glass that is
  colored green by pieces of iron.
• Manganese by itself colors glass an amethyst
  color, and is responsible for the color of true
  amethyst.
• In the utilisation of vitamin B1.
• The permanganate ion is a powerful oxidizing
  agent and is used in quantitative analysis and in
  medicine

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Manganese History and Other Facts

• Discover byGahn, Scheele, Bergman 1774.
• Word Origin Latin magne magnet, referring to
  the magnetic properties of pyrolusite Italian
  manganese corrupt form of magnesia

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Italian corrupt form of magnesia
Latin Magne magnet
hard brittle
Properties
Chemically reactive
Name Origin
Manganese
Atomic is 25
vitamin B1
Mixed w/ a Metal to make it stronger
Basic Info
Uses
Symbol is Mn
Atomic Mass is 54.9380
powerful oxidizing
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Sources

• http//www.chemsoc.org/viselements/pages/pertable
  fla.htm
• http//www.Chemicalelements.com/index.html
• http//www.chimicool.com/
• www.webelements.com
• http//www.webelements.com/webelements/scholar/el
  ements/periodic-table/uses.html