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manganese    音標拼音: [m'æŋgən,iz]
n. 錳[金屬元素]

錳[金屬元素]

manganese
n 1: a hard brittle grey polyvalent metallic element that
resembles iron but is not magnetic; used in making steel;
occurs in many minerals [synonym: {manganese}, {Mn}, {atomic
number 25}]

Manganese \Man`ga*nese"\, n. [F. mangan[`e]se, It. manganese,
sasso magnesio; prob. corrupted from L. magnes, because of
its resemblance to the magnet. See {Magnet}, and cf.
{Magnesia}.] (Chem.)
An element obtained by reduction of its oxide, as a hard,
grayish white metal, fusible with difficulty (melting point
1244[deg] C), but easily oxidized. Its ores occur abundantly
in nature as the minerals pyrolusite, manganite, etc. Symbol
Mn. Atomic number 25; Atomic weight 54.938 [C=12.011].
[1913 Webster PJC]

Note: An alloy of manganese with iron (called ferromanganese)
is used to increase the density and hardness of steel.
[1913 Webster]

{Black oxide of manganese}, {Manganese dioxide} or {Manganese
peroxide}, or {Black manganese} (Chem.), a heavy black powder
{MnO2}, occurring native as the mineral pyrolusite, and
valuable as a strong oxidizer; -- called also familiarly
{manganese}. It colors glass violet, and is used as a
decolorizer to remove the green tint of impure glass.
[1913 Webster]


Mn \Mn\, n. (Chem.)
The chemical symbol for {manganese}.
[PJC]



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  • Manganese - Wikipedia
    Manganese is a chemical element; it has the symbol Mn and atomic number 25 It is a hard, brittle, silvery metal, often found in minerals in combination with iron First isolated in the 1770s, manganese is a transition metal with many industrial alloy uses, particularly in stainless steels in which it improves strength, workability, and resistance to wear Manganese oxide is used as an
  • Manganese - Uses, Side Effects, and More - WebMD
    Learn more about Manganese uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain Manganese
  • Manganese - Health Professional Fact Sheet - Office of Dietary . . .
    Manganese overview for health professionals Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here
  • Manganese: Health Benefits, Good sources, Deficiency, Dosage - Mayo . . .
    Manganese is an essential mineral for bone, metabolism, and brain health Learn its benefits, top food sources, deficiency signs, and recommended dosage
  • Manganese | Uses, Facts, Compounds | Britannica
    Manganese combined with other elements is widely distributed in Earth’s crust Manganese is second only to iron among the transition elements in its abundance in Earth’s crust; it is roughly similar to iron in its physical and chemical properties but is harder and more brittle It occurs in a number of substantial deposits, of which the most important ores (which are mainly oxides) consist
  • 5 Health Benefits of Manganese
    Manganese is a mineral used in many of our body’s processes It helps control inflammation, send brain signals, process nutrients and form strong bones
  • Manganese - Element information, properties and uses | Periodic Table
    Manganese is the fifth most abundant metal in the Earth’s crust Its minerals are widely distributed, with pyrolusite (manganese dioxide) and rhodochrosite (manganese carbonate) being the most common
  • Manganese Benefits, Foods, Deficiency, Supplements and More - Dr. Axe
    Manganese helps prevent osteoporosis and inflammation and has many other health benefits Learn the top foods, deficiency symptoms and more





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