Barium

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while nitrate and chlorate give colors in pyrotechny. The impure sulfide of radiantly glows after exposure to the light. metal has few practical applications, although it is sometimes used in coating electrical conductors in electronic apparatus and in automobile ignition systems. sulfate (BaSO4) is used as a filler for rubber products, in paint, and in linoleum. nitrate is used in fireworks. A form of sulfate, which is opaque to X rays, is used for the X-ray examination of the gastrointestinal tract.
Naturally occurring is a mixture of seven stable isotopes. Twenty two other radioactive isotopes are known to exist.
is an ore found in the ground. It is then purified.
was distinguished from lime by a Swedish chemist named Carl Wilhelm Scheele in 1774. He discovered a new base called baryta as a minor constituent in pyrolusite. Only after the electric battery became available could English Scientist Sir Humphry Davy, who officially discovered it, isolate the element by ...

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