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Le manganèse est un élément chimique, de symbole Mn et de numéro atomique 25.. Le nom dérive de Magnesia, une partie de la province grecque de Thessalie, dont dérive également le mot grec pour aimant, magnes.Le mot manganèse est l'abréviation de manganesium, l'ancien nom pour l'élément.
Manganese homeostasis is of great importance to the organism because it is an essential mineral for the activity of several enzymes such as pyruvate carboxylase, which catalyzes the conversion of pyruvate to oxaloacetate (16); arginase, which converts arginine to urea (17); and manganese superoxide dismutase (MnSOD), critical for antioxidant ...
Define Manganese oxide. Manganese oxide synonyms, Manganese oxide pronunciation, Manganese oxide translation, English dictionary definition of Manganese oxide. n. A black crystalline compound, MnO2, that is a strong oxidant and is used as a depolarizer of dry-cell batteries and in textile dyeing. American Heritage®...
The meaning of MANGANESE SESQUIOXIDE is a compound Mn2O3 obtained as a black powder by heating manganese dioxide or manganous salts in air —called also manganese(III) oxide, manganic oxide.
The meaning of MANGANESE OXIDE is an oxide of manganese; especially : manganese dioxide.
Definition of 'manganese' COBUILD frequency band. ... Submit new words and phrases to the dictionary. Benefit from an increased character limit in our Translator tool. Receive our weekly newsletter with the latest news, exclusive content, and …
Manganese is a silvery-gray metal and is part of the group known as the transition metals.It is similar to iron. It is hard to melt, but easy to oxidize.Manganese forms chemical compounds in several oxidation states: +2, +4, and +7 are the most common.Manganese compounds can be black, brown, pink, red, green, blue, and purple.
Manganese Dioxide definition: A black crystalline compound, MnO 2, that is a strong oxidant and is used as a depolarizer of dry-cell batteries and in textile dyeing.
MANGANESE definition: 1. a chemical element that is a grey-white metal, used in the process of making steel 2. a chemical…. Learn more.
The meaning of MANGANESE HEPTOXIDE is a compound Mn2O7 obtained as a dark green explosive oil by action of concentrated sulfuric acid on permanganates —called also manganese(VII) oxide.
MANGANESE meaning: a grayish-white usually hard metal that breaks easily ... Quizzes; Core Vocabulary; Browse the Dictionary; The Britannica Dictionary. manganese. 1 ENTRIES FOUND: manganese (noun) manganese / ˈ mæŋgəˌniːz/ noun. manganese / ˈ mæŋgəˌniːz/ noun. Britannica Dictionary definition of MANGANESE [noncount]: a grayish ...
A brittle greyish-white metallic element that exists in four allotropic forms, occurring.... Click for English pronunciations, examples sentences, video.
MANGANESE DIOXIDE definition: a blackish, crystalline or powdery substance, MnO 2, that is a strong oxidizing agent,... | Meaning, pronunciation, translations and examples in American English
manganese, Metallic chemical element, one of the transition elements, chemical symbol Mn, atomic number 25. It is a silvery white, hard, brittle metal, widely distributed in Earth's crust in combination with other elements. Nodules rich in manganese occur in huge quantities on the seafloor, but no economical way to mine them has been devised.
The most important manganese compound is manganese dioxide, in which manganese is in the +4 oxidation state, and the black mineral pyrolusite is the chief source of manganese and all of its compounds. It is …
Manganese definition: a hard, brittle, grayish-white, metallic element, an oxide of which, MnO2(manganese dioxide ), is a valuable oxidizing agent: used chiefly as an alloying agent in …
ferromanganese: [noun] an alloy of iron and manganese containing usually about 80 percent manganese and used in the manufacture of steel.
A brittle greyish-white metallic element that exists in four allotropic forms, occurring.... Click for English pronunciations, examples sentences, video.
Ferro-Manganese, Silico-Manganese. What is Ferro-manganese. Ferro-manganese is produced through a smelting process that involves the reduction of manganese oxide and iron oxide with carbon in a blast furnace. Ferro-manganese, containing around 65-75% manganese, is a pivotal alloy in steel production. Its low carbon content makes it versatile ...
Manganese is a greyish-pink metal. It resembles iron in its physical appearance. It is brittle and hard. Manganese has a paramagnetic nature. when exposed to air and moisture, it undergoes slow oxidation that leads to rusting. Manganese is …
Manganese nodule definition: a small irregular concretion found on deep ocean floors having high concentrations of certain metals, esp manganese. See examples of MANGANESE NODULE used in a sentence.
Definition of Manganese in the Definitions dictionary. Meaning of Manganese. What does Manganese mean? ... Johnson's Dictionary Rate this definition: 0.0 / 0 votes. Manganese noun. Manganese is extremely well known by name, though the glassmen use it for many different substances, that have the same effect in …
Manganese bronze definition: an alloy that is about 55 percent copper, 40 percent zinc, and up to 3.5 percent manganese.. See examples of MANGANESE BRONZE used in a sentence.
The meaning of MANGANESE SULFATE is a sulfate of manganese; especially : manganous sulfate.
Ferromanganese definition: a ferroalloy containing up to 90 percent manganese. . See examples of FERROMANGANESE used in a sentence.
Manganite definition: a gray to black mineral, hydrous manganese oxide, MnO(OH); gray manganese ore. . See examples of MANGANITE used in a sentence.
MANGANESE DIOXIDE definition: a blackish, crystalline or powdery substance, MnO 2, that is a strong oxidizing agent,... | Meaning, pronunciation, translations and examples
The meaning of MANGAN- is manganese. How to use mangan- in a sentence.
Manganese (Mn) is a chemical element located on the periodic table in Group 7 and Period 4. Manganese is labeled a transition metal.It is abundant in the Earth's crust, and there are substantial ...
