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barium    音标拼音: [b'ɛriəm]
n. 钡

钡

barium
n 1: a soft silvery metallic element of the alkali earth group;
found in barite [synonym: {barium}, {Ba}, {atomic number 56}]

Barium \Ba"ri*um\, n. [NL., fr. Gr. bary`s heavy.] (Chem.)
One of the elements, belonging to the alkaline earth group; a
metal having a silver-white color, and melting at a very high
temperature. It is difficult to obtain the pure metal, from
the facility with which it becomes oxidized in the air.
Atomic weight, 137. Symbol, Ba. Its oxide called baryta.
[Rarely written {barytum}.]
[1913 Webster]

Note: Some of the compounds of this element are remarkable
for their high specific gravity, as the sulphate,
called heavy spar, and the like. The oxide was called
barote, by Guyton de Morveau, which name was changed by
Lavoisier to baryta, whence the name of the metal.
[1913 Webster]

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  • Barium - Wikipedia
    Barium is a chemical element; it has symbol Ba and atomic number 56 It is the fifth element in group 2 and is a soft, silvery alkaline earth metal Because of its high chemical reactivity, barium is never found in nature as a free element The most common minerals of barium are barite (barium sulfate, BaSO 4) and witherite (barium carbonate, BaCO 3) The name barium originates from the
  • Barium | Uses, Compounds, Facts | Britannica
    Barium, chemical element, one of the alkaline-earth metals of Group 2 of the periodic table The element is used in metallurgy, and its compounds are used in pyrotechnics, petroleum production, and radiology Barium has a silvery white luster when freshly cut
  • Barium Swallow: What to Expect, Side Effects, and Cost
    A barium swallow is a type of X-ray test that helps your doctor see the back of your mouth and throat (pharynx), and the tube that extends from the back of the tongue down to the stomach (esophagus)
  • Barium | Public Health Statement | ATSDR
    Barium is a silvery-white metal that occurs in nature in many different forms called compounds These compounds are solids and they do not burn well Two forms of barium, barium sulfate and barium carbonate, are often found in nature as underground ore deposits Barium is sometimes found naturally in drinking water and food Because certain forms of barium (barium sulfate and barium carbonate
  • Barium Swallow Test (Esophagram): What It Is Why It’s Done
    A barium swallow is a test that shows what’s happening inside your esophagus when you swallow Learn more about what it is and why you might need it
  • Can Barium Make You Sick? Side Effects and What to Expect
    Navigating a barium study? Discover potential effects, from common reactions to rare complications, and how to ensure a safe recovery
  • Barium - Element information, properties and uses | Periodic Table
    Element Barium (Ba), Group 2, Atomic Number 56, s-block, Mass 137 327 Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images
  • Barium sulfate (oral route) - Side effects uses - Mayo Clinic
    Description Barium sulfate is used to help diagnose or find problems in the esophagus, stomach, and bowels It is a radiographic contrast agent Contrast agents are used to create a clear picture of the different parts of the body This medicine is to be given only by or under the direct supervision of a doctor
  • What Is Barium Used In? Industries, Sources, and Risks
    Barium shows up in a surprisingly wide range of everyday products and industrial processes This dense, silvery metal is never used in its pure form outside a lab, but its compounds are essential ingredients in medical imaging drinks, oil drilling fluids, fireworks, electronics, specialty glass, and even your drinking water (in trace amounts) Here’s where barium actually ends up and what it
  • Barium Facts, Symbol, Discovery, Properties, Uses
    Barium (element 56) information, is it a metal, discovery date, properties (atomic mass, density, melting point, electron configuration), barium element uses





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