Barium and a member of this group are produced by one of the fission reactions that uranium-235 undergoes. Neil Bartlett created a new compound after reacting one member of this group with platinum hexa-fluoride. One type of 
Barium and a member of this group are produced by one of the fission reactions that uranium-235 undergoes. Neil Bartlett created a new compound after reacting one member of this group with platinum hexa-fluoride. One type of radiometric dating is based on the decay of potassium into a member of this group that is the third most common element in Earth's atmosphere. Another member of this group is often found in advertising signs. The halogens are located to the left of this group on the periodic table. For 10 points, name this group of relatively inert elements that includes krypton, xenon, argon, neon, and helium.
Barium and a member of this group are produced by one of the fission reactions that uranium-235 undergoes.
{noble gas}es [or {Group 18}; or {Group VIIIA}]