What is the characteristics of Barium?
Barium is a actinic aspect with the attribute Ba and diminutive amount 56. It is the fifth aspect in Group 2, a bendable ablaze brownish acrid apple metal. Because of its top actinic acuteness barium is never begin in attributes as a chargeless element. Its hydroxide was accepted in pre-modern history as baryta; this actuality does not action as a mineral, but can be able by heating barium carbonate.
The a lot of accepted naturally-occurring minerals of barium are barite (barium sulfate, BaSO4) and witherite (barium carbonate, BaCO3), both getting baffling in water. Barium's name originates from the actinic acquired "baryta", which itself comes from Greek βαρ?? (barys), acceptation "heavy." Barium was articular as a new aspect in 1774, but not bargain to a metal until 1808, anon afterwards electrolytic abreast techniques became available.
Barium has alone a few automated applications. The metal has been historically acclimated to cruise air in exhaustion tubes. It is a basic of YBCO (high-temperature superconductors) and electroceramics, and is added to animate and casting adamant to abate the admeasurement of carbon grains aural the microstructure of the metal. Barium compounds are added to fireworks to admit a blooming color. They are acclimated as an baffling abundant accretion to oil able-bodied conduct fluid, and in purer form, as X-ray radiocontrast agents for imaging the animal gastrointestinal tract. Acrid barium compounds are poisonous due to absolution of the acrid barium ion, and accordingly accept been acclimated as rodenticides.
Barium is a soft, silvery-white metal, with a slight aureate adumbration if ultrapure. The silvery-white blush of barium metal rapidly vanishes aloft blaze in air acquiescent a aphotic gray oxide layer. Barium has a average specific weight and acceptable electrical conductivity. Ultrapure barium is actual harder to synthesize, and accordingly abounding backdrop of barium accept not been accurately abstinent yet.
Barium is chemically agnate to magnesium, calcium, and strontium, getting even added reactive. It consistently exhibits the blaze accompaniment of +2. Reactions with chalcogens are awful exothermic (release energy); the acknowledgment with oxygen or air occurs at allowance temperature, and accordingly barium is stored beneath oil or apathetic gas atmosphere. Reactions with added nonmetals, such as carbon, nitrogen, phosphorus, silicon, and hydrogen, are about exothermic and advance aloft heating.
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