Barium is an Alakine Earth Metal. It's in Group 2 and period 6. The atomic number is 56 and the mass number is 137.32. It's a Solid at room temperature and is a metal. It's used in spark plugs, fireworks, and gemstones.
This is used in jewelry and is the state gem of California.
barium is used in fireworks to give it a specific color.
Barium is used in spark plugs.