Manganese
By Satya Butler
Atomic Number-25
Atomic Symbol-Mn
Atomic Mass-54.9385
Family Name-Transition Metal
Group-B7
Period-4
Melting Point-1247ºC
Boiling Point-2061ºC
Discovered by Johann Gahn in 1774
Atomic Symbol-Mn
Atomic Mass-54.9385
Family Name-Transition Metal
Group-B7
Period-4
Melting Point-1247ºC
Boiling Point-2061ºC
Discovered by Johann Gahn in 1774
Protons: 25
Neutrons: 30
Electron Configuration:
First energy level: 2
Second energy level: 8
Third energy level: 13
Fourth energy level: 2
Neutrons: 30
Electron Configuration:
First energy level: 2
Second energy level: 8
Third energy level: 13
Fourth energy level: 2
Fun Facts:
Manganese is one of the most abundant metals in soil.
As a powder, manganese will burn in oxygen.
Manganese is essential for human and animal survival.
You can find manganese almost anywhere in the world (even on the bottom of the ocean).
Manganese is one of the most abundant metals in soil.
As a powder, manganese will burn in oxygen.
Manganese is essential for human and animal survival.
You can find manganese almost anywhere in the world (even on the bottom of the ocean).
Resources:
http://www.lenntech.com/periodic/elements/mn.htm#ixzz0dCvPhzWK
http://www.chemicalelements.com/elements/mn.html
http://www.periodic.lanl.gov/elements/25.html
http://www.webelements.com/manganese/history.html
Pictures:
http://www.colby.edu/sts/st215_2004/projects/stations/libreville/index.html
http://www.chemicalelements.com/elements/mn.html
http://www.ferrooverseas.com/mining
A picture of Manganese
Visual discription at room temperature:
Manganese is a pinkish gray.
It's a hard metal.
It is probably in some of the steel in the room you are in.
Manganese is a pinkish gray.
It's a hard metal.
It is probably in some of the steel in the room you are in.
Manganese is used to:
Decolorize glass that has been turned green by the impurities of iron.
Turns glass an amethyst color.
Help black paint dry faster.
Make iron and steel easier to work with.
Decolorize glass that has been turned green by the impurities of iron.
Turns glass an amethyst color.
Help black paint dry faster.
Make iron and steel easier to work with.
A Manganese Mine
History of Manganese:
Manganese was discovered by Johann Gahn in 1774. He isolated the dioxide (MnO2, as the mineral pyrolusite) with charcoal (essentially carbon) by heating and the result was a sample of the metal manganese.
Manganese was discovered by Johann Gahn in 1774. He isolated the dioxide (MnO2, as the mineral pyrolusite) with charcoal (essentially carbon) by heating and the result was a sample of the metal manganese.
Isolation:
It is no normally necessary to make manganese in a laboratory as it is abailable commercially. Mearly all manganese produced commercially is used in the steel industry as ferromanganese. This is made by the reduction of iron oxide, Fe2O3, and manganese dioxide, MnO2, in appropriate proportions with carbon in a blast furnace. Pure manganese is available through the electrolysis of manganese sulphate, MnSO4.
It is no normally necessary to make manganese in a laboratory as it is abailable commercially. Mearly all manganese produced commercially is used in the steel industry as ferromanganese. This is made by the reduction of iron oxide, Fe2O3, and manganese dioxide, MnO2, in appropriate proportions with carbon in a blast furnace. Pure manganese is available through the electrolysis of manganese sulphate, MnSO4.
Purification:
Commercially produced by reduction of its ores using aluminum. High purity manganese is made by electrolysis of manganese sulfate in solution.
