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barium    音標拼音: [b'ɛriəm]
n. 鋇

鋇

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
  • Barium Swallow: What to Expect, Side Effects, and Cost - Healthline
    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
  • 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 - 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 Facts, Symbol, Discovery, Properties, Uses - Chemistry Learner
    Belonging to the family of alkaline earth metals, barium (pronounced as BAR-ee-em) is a heavy metal represented by the chemical symbol Ba [1]
  • Barium Facts – Element 56 or Symbol Ba - Science Notes and Projects
    Barium is a chemical element with the symbol Ba and atomic number 56 It is an alkaline earth metal that is best known for the green color it adds to fireworks and for its use in barium enemas for x-ray imaging Pebbles consisting of the mineral baryte occurred in volcanic rock in Italy
  • Barium (Ba) Element: Properties, Uses, Reactions, Effects - Science Info
    Barium is a chemical element with the atomic number 56 and is represented by the symbol ‘Ba’ in the periodic table It is soft and silvery in appearance and classified as alkaline earth metal and belongs to the s-block of group 2 of the periodic table It is a highly reactive chemical so it can not be found as a free element in nature
  • Facts About Barium - Live Science
    Pure barium is a soft, silvery white metal Classified as an alkaline earth metal, it is located in group, or column, 2 on the periodic table, along with beryllium, magnesium, calcium, strontium
  • Barium Element | History, Uses, Facts, Physical Chemical Characteristics
    Barium is a chemical element with 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
  • What is Barium? - BYJUS
    What is Barium? Represented by the symbol ‘Ba’, Barium is a group 2 element in the periodic table with atomic number 56 Table of Contents About Barium; Chemical Properties of Barium; Uses of Barium; Frequently Asked Questions – FAQs; About Barium





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