barium can be found in the world but it is never found in nature.
where can barium be found in the world?
never found in nature
barium is a chemical element with the symbol ba and atomic number 56. it is the fifth element in group 2, a soft silvery metallic alkaline earth metal. barium is never found in nature in its pure form due to its reactivity with air. its oxide is historically known as baryta but it reacts with water and carbon dioxide and is not found as a mineral. the most common naturally occurring minerals are the very insoluble barium sulfate, baso (barite), and barium carbonate, baco(witherite). barium's name originates from greek "barys" (βαρύς), meaning "heavy", describing the high density of some common barium-containing ores.
period 6 element
radiographic examinations involve radiation exposure in the form of x-rays. although barium ions are toxic, their use is generally regarded as safe because the small amounts of barium ions available in solution and absorbed by the gastrointestinal tract are deemed to be negligible; however, isolated cases of barium encephalopathy have been described following absorption of barium from the intestinal tract. constipation and abdominal pain may occur after barium meals. the formation of baroliths, which may need to be removed surgically, is a complication of the use of barium sulfate. barium sulfate may cause serious peritoneal irritation. leakage of barium sulfate into the abdominal cavity may occur in people with duodenal ulcers or other perforations and may lead to peritonitis, adhesion, and granulomas; it is associated with a high mortality rate. leakage of barium into the mediastinum or peritoneal cavity may lead to endotoxic shock, which is often fatal; as a result, the use of barium as a contrast agent is contraindicated when there is a suspicion or possibility of compromise of bowel wall integrity. aspiration or inhalation of barium sulfate into the lungs during oral application can lead to serious respiratory complications leading to fatal aspiration pneumonia or asphyxiation. hypersensitivity and allergic reactions are rare but some additives contained in barium preparations may induce immune reactions. complete gastrointestinal obstruction is also a contraindication for barium studies.
upper gastrointestinal series