Symbol - Ba
Atomic weight - 137.33
Density - 3.78
The metal barium is often in the aluminum alloy is used as a getter in high-electronic devices.
Small amounts of barium is used in industry for cleaning molten copper and lead impurities from sulfur, oxygen and nitrogen. Barium is added to the printing and anti-friction alloys, the alloy of barium with nickel is used for making parts of radio tubes and electrodes of the spark plugs in gasoline engines.