Atomic number 56 occurs as toxic chemical element in the periodic table that has the symbol Ba & atomic number 56. The easy silvery metallic element, barium is an alkaline earth metal and melts at the super high temperature. Its oxide is known as baryta and it is primarily uncovered in the mineral barite but is never found within its pure form due to its reactivity with air. Compounds of this metal come utilized inside microscopic quantities around paints and around glassmaking.

Notable characteristics
Atomic number 56 occurs as metallic element that is chemically similar to calcium, yet is easy & inside its pure form is silvery white resembling lead. This metal oxidizes very easily while involved to air & is extremely reactive with water or alcohol. Ba is decomposed by a body of water or even alcohol. A few of the compounds of this element come remarkable for their high specific gravity, as is its sulfate: barite Ba(SO_{Little joe}) too known as thick spar.

Applications
Atomic number 56 is primarily utilized inside sparkplugs, vacuum tubes, fireworks, and around fluorescent lamps. Besides: A "getter" in vacuum tubes. Barium sulfate is permanent white & is utilized around paint, in X-ray diagnostic work, & around glassmaking. Barite is used extensively as a advisement professional within oil well drilling fluids & around rubber production. Barium carbonate is a useful rat poison & can also become utilized around making glass and bricks, while barium nitrate and chlorate give green colors in pyrotechnic. Impure barium sulfide phosphoresces after exposure to the light. Barium salts, especially barium sulfate, are periodically given orally (the barium meal) or as an enema, to increase the direct contrast of medical X-rays of the digestive system. Lithopone, a pigment that contains barium sulfate and zinc sulfide, has good covering power, & doesn't darken inside once contaminated to sulphide.

History
Ba (Greek "barys" meaning "heavy") was 1st identified within 1774 by Carl Scheele and extracted in 1808 by Sir Humphry Davy in England. A oxide was at number one known as barote, by Guyton de Morveau, which was changed by Antoine Lavoisier to baryta, which soon was modified to "barium" to describe a metal.

Occurrence
Because ba quickly becomes oxidised inside air, these are hard to obtainside this metal in its pure form. These are primarily uncovered around & extracted from either a mineral barite which is crystalized barium sulfate. Ba is commercially produced through the electrolysis of molten barium chloride (BaCl₂) Isolation (* watch):
Compounds
A first compounds come barium peroxide, chloride, sulfate, carbonate, nitrate, and chlorate. After burned, ba salts glows green.

Isotopes
Naturally occurring atomic number 56 occurs as mix of septet stable isotopes. There come twenty-22 isotopes known, however virtually all one are extremely radioactive and have half-lifes in the many msec to several microscopic range. the just notable exception is barium-133 which has a half-life of Ten.51 years.

Precautions
Everthing a water supply or even acid soluble barium compounds are pleasantly poisonous. Oxidation occurs very well &, to remain pure, bthe should exist as saved under a petroleum-depending fluid (like kerosene) or more suitable oxygen-free liquids that exclude air. Barium sulfate can be used within medicine exclusively because it doesn't dissolve, & is eliminated wholly from either a digestive tract.