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What is manganese?
Manganese is a chemical element with the symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels.
What is manganism and why is it dangerous?
Manganese is an important element for human health, essential for development, metabolism, and the antioxidant system. Nevertheless, excessive exposure or intake may lead to a condition known as manganism, a neurodegenerative disorder that causes dopaminergic neuronal death and symptoms similar to Parkinson’s disease.
Is manganese a paramagnetic metal?
Manganese is a silvery-gray metal that resembles iron. It is hard and very brittle, difficult to fuse, but easy to oxidize. Manganese metal and its common ions are paramagnetic.
What is the name of the compound with the formula Mangan?
Michele Mercati called magnesia nigra manganesa, and finally the metal isolated from it became known as manganese (German: Mangan ). The name magnesia eventually was then used to refer only to the white magnesia alba (magnesium oxide), which provided the name magnesium for the free element when it was isolated much later.
Is manganese ionic or covalent?
Manganese metal and its common ions are paramagnetic. Manganese tarnishes slowly in air and oxidizes (“rusts”) like iron in water containing dissolved oxygen. Naturally occurring manganese is composed of one stable isotope, 55 Mn. Several radioisotopes have been isolated and described, ranging in atomic weight from 44 u ( 44 Mn) to 69 u ( 69 Mn).
What is the BCC of manganese?
body-centered cubic (bcc) Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard brittle silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels.