BARIUM
What do we to do a dead chemist? We barium!
Basic facts:
-Barium's symbol on the periodic table is "Ba"
-Barium's atomic number is 56
-It has an atomic mass of 137.327
-It's located in period 6 on the periodic table, along with being in Group #2, the Alkaline Earth Metals.
-At room temperature, barium is a solid.
-Barium is a metal.
Fireworks
Barium nitrate gives fireworks a green colour.
Glassmaking
Barium isn't used in very many places, it's just another element able to be used in glassmaking.
Rat poison
Due to it's toxic properties, barium is also used in older rat poisons.
Uses summary
Barium isn't really widely used, as many elements take it's place better in almost any given situation, as it's just another resource able to be used, and is so.