|Group||7||Melting point||1246°C, 2275°F, 1519 K|
|Period||4||Boiling point||2061°C, 3742°F, 2334 K|
|Block||d||Density (g cm−3)||7.3|
|Atomic number||25||Relative atomic mass||54.938|
|State at 20°C||Solid||Key isotopes||55Mn|
|Electron configuration||[Ar] 3d54s2||CAS number||7439-96-5|
|ChemSpider ID||22372||ChemSpider is a free chemical structure database|
- Manganese, a chemical element that has a symbol Mn and atomic number 25.
- This element is not found as a free element in nature but available in combination with iron and other minerals.
- It is a metal that has important metal alloy uses and particularly in stainless steel.
- Manganese is used to produce a variety of important alloys and to deoxidize steel and desulfurize.
- It is also used in dry cell batteries.
- Manganese is used as a black-brown pigment in paint.
- It is an essential trace element for living creatures.
- It is mainly used to decolorize glass and to prepare violet colored glass.
- Steel contains 1% manganese to increase the strength and improve the workability.
- Manganese steel has 13% manganese which is very strong and used for railway tracks, rifle barrels, safes and prison bars.
- Drink cans are made from an alloy of aluminum that contains 1.5% manganese, improving the resistance to corrosion.
- Manganese is also used as a catalyst, decolorize the glass that is colored green by iron impurities.
- Manganese sulfate is used to make a fungicide.
- Manganese is a gray-white, hard and very brittle metal.
- It tarnished on exposure to air and oxidized to manganese when heated.
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