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magnesium    音标拼音: [mægn'iziəm]
n. 镁

镁

magnesium
n 1: a light silver-white ductile bivalent metallic element; in
pure form it burns with brilliant white flame; occurs
naturally only in combination (as in magnesite and dolomite
and carnallite and spinel and olivine) [synonym: {magnesium},
{Mg}, {atomic number 12}]

Magnesium \Mag*ne"si*um\, n. [NL. & F. See {Magnesia}.] (Chem.)
A light silver-white metallic element of atomic number 12,
malleable and ductile, quite permanent in dry air but
tarnishing in moist air. It burns, forming (the oxide)
magnesia, with the production of a blinding light (the
so-called magnesium light) which is used in signaling, in
pyrotechny, or in photography where a strong actinic
illuminant is required. Its compounds occur abundantly, as in
dolomite, talc, meerschaum, etc. Symbol Mg. Atomic weight,
24.305. Specific gravity, 1.75.
[1913 Webster]

{Magnesium sulphate}. (Chem.) Same as {Epsom salts}.
[1913 Webster]

magnesium
Symbol: Mg
Atomic number: 12
Atomic weight: 24.312
Silvery metallic element belonging to group 2 of the periodic table
(alkaline-earth metals). It is essential for living organisms, and is
used
in a number of light alloys. Chemically very reactive, it forms a
protective oxide coating when exposed to air and burns with an intense
white flame. It also reacts with sulphur, nitrogen and the halogens.
First
isolated by Bussy in 1828.

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  • Magnesium - Wikipedia
    Although it is difficult to ignite in mass or bulk, magnesium metal will ignite Magnesium may also be used as an igniter for thermite, a mixture of aluminium and iron oxide powder that ignites only at a very high temperature
  • Magnesium Supplements: Benefits, Deficiency, Dosage, Effects . . . - WebMD
    Explore the power of magnesium and its impact on your health WebMD explains the Benefits, Sources, Deficiency, Dosage, and Effects to meet your daily needs
  • Magnesium Supplements - Uses, Side Effects, and More
    Overview: Magnesium supplements are taken to increase magnesium levels Common side effects include nausea, diarrhea, or stomach cramps Serious side effects are rare, unless you take too much
  • 鎂的13種功效及副作用（15點使用禁忌請留意） - 營養新知
    鎂（Magnesium）是巨量礦物質的一種，意味著需求遠大於微量礦物質，在人體常見的礦物質中含量排名第四（僅次於鈉、鉀、鈣），在實證醫學中，鎂有什麼功效？ 有副作用或禁忌嗎？ 詳見內文最新分析
  • 镁（化学元素）_百度百科
    镁是元素周期表中ⅡA族的 碱土金属。 元素符号Mg，相对原子质量24 305，它是一种银白色有延展性的金属。 相对密度为1 74g cm3，熔点648 8℃，沸点1107℃，属于活泼金属。 在干燥空气中较稳定。 受热与水作用，与大多数的非金属，如卤素、氮、硫等作用，溶于酸并放出氢气。 还原性较强。 [1] 镁有三个自然同位素，其质量数分别为23 99、24 99和25 99。 在自然界的混合物中镁的同位素含量分别为78 6%、10 11%和11 2%。 其是地壳中第八丰富的元素，主要存在于矿物中，比如菱镁矿、白云石等，海水和盐湖卤水中也含有大量的镁。 工业中提取镁常用电解法和热还原法。 [2]
  • Magnesium - Health Professional Fact Sheet - Office of Dietary . . .
    Magnesium overview for health professionals Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here
  • 镁补充剂指南：益处、副作用与安全剂量 - FeelGoodPal
    Rodríguez-Morán M, Guerrero-Romero F Oral magnesium supplementation improves insulin sensitivity and metabolic control in type 2 diabetic subjects: a randomized double-blind controlled trial





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