Mn54.9380

Manganese

~Properties~~Properties~~Magnesium has a melting point of 1244+/-3°C, boiling point of

1962°

~It’s 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.

~Uses~~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

~Manganese History and ~Manganese History and OtherOther Facts~Facts~

Discover by:Gahn, Scheele, & Bergman 1774.

Word Origin: Latin magne: magnet, referring to the magnetic properties of pyrolusite; Italian manganese: corrupt form of magnesia

Manganese

Properties

Basic InfoUses

NameOrigin

Atomic # is 25

Atomic Mass is 54.9380

Symbol is Mn

vitamin B1

powerful oxidizing

hard & brittle

Chemically reactive

Latin Magne

magnet

Italiancorrupt form of magnesia

Mixed w/ a Metal to make

it stronger

~Sources~~Sources~

~http://www.chemsoc.org/viselements/pages/pertablefla.htm

~http://www.Chemicalelements.com/index.html

~http://www.chimicool.com/

~www.webelements.com

~http://www.webelements.com/webelements/scholar/elements/periodic-table/uses.html