The Probert Encyclopaedia of Science & Technology

BARIUM

Barium is a silver-white, malleable, toxic, bivalent metallic element of the alkaline-earth group that occurs only in combination - it is strongly reactive to air and has to be stored under mineral oil. It has the symbol Ba. Barium dissolves in water, but does not dissolve in sulphuric acid, rather the sulphuric acid causes a protective layer of barium sulphate to form around the barium.
Research Barium