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Barium Element in Periodic Table | Atomic Number Atomic Mass
Barium Element- Barium element is a chemical element and one of the members of alkaline-earth metals of Group 2 (IIa) of the periodic table. Barium atomic number is 56 and it is represented with the symbol Ba. It is a soft, silvery alkaline earth metal. Ba is never found in nature as a free element because of its high level of chemical reactivity.
Ba is most commonly found in combined form as sulfate and carbonate, but can also form compounds with ions of hydroxide, chloride, nitrate, chlorate and other negative ions. It is the 17th most abundant element in the earth's crust because about 0.05 percent of Earth's crust is barium. 130Ba,132Ba,133Ba, 134Ba,135Ba, 136Ba, 137Ba and 138Ba are seven naturally occurring isotopes .
Uses Of Barium Element:
Barium element does not have many practical uses.However most common uses are:
- It is used in drilling fluids for oil and gas wells.
- Ba is also used in paint and in glass making.
- Ba carbonate is used as a rat poison
- And barium nitrate and barium chlorate give green colors in fireworks.
- Barium sulphate is insoluble and so can be safely swallowed. A suspension of barium sulphate is sometimes given to patients suffering from digestive disorders. This is a ‘barium meal’ or ‘barium enema’. It is a heavy element and scatters X-rays; so when it passes through the stomach and intestines, innards can be distinguished through X-ray scanning for diagnosing digestive disorders.
Barium Element Information:
Discovered by:Carl Wilhelm Scheele
Atomic number: 56
Relative atomic mass: 137.327
Electron configuration: [Xe] 6s2
Other elements in the same block:
Period: period 6
Other elements in the same period:
Caesium, Lanthanum ,Cerium, Praseodymium, Neodymium, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium, Hafnium, Tantalum, Tungsten, Rhenium, Osmium, Iridium, Platinum, Gold, Mercury, Thallium, Lead, Bismuth, Polonium, Astatine and Radon are the elements in the same period.
Group: group 2 (alkaline earth metals)
Other elements in the same group:
Other elements in the same orbital:
Caesium is the element in the same orbital.
Key isotopes: 138Ba
Melting point: 727°C, 1341°F, 1000 K
Boiling point: 1845°C, 3353°F, 2118 K
Element category: alkaline earth metals
Density (g cm−3): 3.62
CAS number: 7440-39-3
Color: silvery gray
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