Noun
One of the elements, belonging to the alkaline earth group; a metal having a silver-white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility with which it becomes oxidized in the air. Atomic weight, 137. Symbol, Ba. Its oxide called baryta.
Source: Webster's dictionaryAfter dissolution the barium and radium are reprecipitated as sulfates and this was repeated one or few times, for further purification of the mixed sulfate. Source: Internet
Additionally, radium phosphate, oxalate, and sulfite are probably also insoluble, as they coprecipitate with the corresponding insoluble barium salts. Source: Internet
A " getter ", a small amount of shiny barium metal evaporated onto the inside of the glass, helps maintain the vacuum by absorbing gas released in the tube over time. Source: Internet
Adding barium also increases the refractive index. Source: Internet
Anything that may contact with barium should be electrically grounded. Source: Internet
But how could barium be formed from uranium? Source: Internet