2017年4月27日 · A barium swallow is a type of test used to look inside the esophagus, or food pipe. A doctor might recommend this test if they need to look at the outline of any part of a...

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.

2017年4月22日 · 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...

2025年1月20日 · 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 is a soft, silvery metal that rapidly tarnishes in air and reacts with water. Barium is not an extensively used element. Most is used in drilling fluids for oil and gas wells. It is also used in paint and in glassmaking. All barium compounds are toxic; however, barium sulfate is insoluble and so can be safely swallowed.

2024年4月28日 · 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 …

Barium is a dense alkaline earth metal that occurs naturally in ore deposits and makes up 0.05% of the Earth’s crust (Genter 2001). Barium and its compounds may be found in nature or produced industrially for various uses.

Barium is a metallic element, soft, and when pure is silvery white; it belongs to the alkaline earth group, chemically resembling calcium. The metal oxidizes very easily and should be kept under petroleum or other suitable oxygen-free liquids to exclude air. …

2023年6月22日 · 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.

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].