Mangaani

Kemiallinen merkki: Mn
Järjestysluku: 25
Kategoria: siirtymämetallit
Ryhmä: 7
Jakso: 4
Lohko: d
Moolimassa: 54,938045 g/mol
Elektronia kuorilla: 2, 8, 13, 2
CAS-numero: 7439-96-5
Olomuoto: kiinteä
Tiheys: 7,21 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 1519 K (1246 °C, 2275 °F)
Kiehumispiste: 2334 K (2061 °C, 3742 °F)
Kiderakenne: cubic body centered
Hapetusluvut: 7, 6, 5, 4, 3, 2, 1
Elektronegatiivisuus: 1,55 (Pauling-asteikko)
Nimen alkuperä: manganesa
Nimen tarkoitus: an ore called magnesia negra (the black ore instead of the white one, magnesia alba) was called manganesa, and finally the metal isolated from it became known as manganese
Faktoja:
- is a gray-white metal, resembling iron
- is found as a free element in nature (often in combination with iron), and in many minerals
- manganese ions are variously colored, and are used industrially as pigments and as oxidation chemicals
- is an essential trace nutrient in all forms of life
- acidic permanganate solutions will oxidize any organic material they come into contact with, and the oxidation process can generate enough heat to ignite some organic substances