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.

2025年1月20日 · barium (Ba), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. The element is used in metallurgy, and its compounds are used in pyrotechnics, petroleum production, and radiology. Barium, which is slightly harder than lead, 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.

钡 bèi （英語： Barium；源于 希臘語： βαρύς，轉寫为 barys，直譯为 重的），是一種 化學元素，其 化學符號 为 Ba， 原子序數 为56， 原子量 為 137.327 u。 钡是 元素週期表 中2A族的第五个元素，是一种柔软的有银白色金属光泽的 碱土金属。 由于它的化学性质十分活泼，从来没有在自然界中发现钡 单质。 钡在自然界中最常见的矿物是 重晶石 （硫酸钡，BaSO 4）和 毒重石 （碳酸钡，BaCO 3），二者皆不溶于水。 它在1774年被确认为一个新元素，但直到1808年电解法 …

Barium is a silvery-white metal which exists in nature only in ores containing mixtures of elements. It combines with other chemicals such as sulfur or carbon and oxygen to form barium compounds. Barium compounds are used by the oil and gas industries to make drilling muds.

Barium is a chemical element with symbol Ba and atomic number 56. Classified as an alkaline earth metal, Barium is a solid at room temperature.

Barium is an active metal. It combines easily with oxygen, the halogens, and other non-metals. The halogens are Group 17 (VIIA) of the periodic table and include fluorine, chlorine, bromine, iodine, and astatine. Barium also reacts with water and with most acids.

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]. Out of the thirty-seven isotopes of barium, only seven are naturally-occurring ones with mass numbers ranging from 130 to 138 (excluding Ba-131) where barium-133 is the most stable, having a half-life of ...

2020年4月8日 · Barium is the fifth chemical element in the periodic table of elements with the atomic number 56. Being a member of the alkaline earth metals family, this soft metal is divalent, electropositive, and reactive, and supports the formation of many compounds with other chemical elements, especially carbon, oxygen, and sulphur. Due to its high ...

Explore the intriguing world of Barium, an alkaline earth metal with diverse applications in industry, medicine, and more. This comprehensive guide covers Barium's historical background, physical and chemical properties, its uses in paint, ceramics, medicine, and special applications like pyrotechnics and electronics.