If you mean which other element is used in a fluorescent light along with argon then the answer is xenon.
Mercury Vapor
mercury
The gas in a fluorescent light bulb tube is composed of mercury, along with argon, xenon, krypton or neon. It is important to dispose of the tubes properly after they are used, since mercury can be toxic to people and animals if it is released into the environment.
No fluorescent material glows under ultraviolet not infrared
"Quicksilver" is an older name for the element mercury, which is used in fluorescent tubes. The average Compact Fluorescent Tube (CFT) contains 4 mg Hg. By comparison the old 48" tube contains 10-25 mg Hg in vapour and liquid form.
sterilizations of equipment and the fluorescent tubes
A pin based fluorescent light fixture is the type of fixture that takes fluorescent tubes. On each end of the fluorescent tubes there are contact pins. These pins are used to hold the tube in the fixture and to supply the voltage to the tube from the fixture's ballast.
If you mean which other element is used in a fluorescent light along with argon then the answer is xenon.
Fluorescent tubes last longer and supply more light per watt of energy consumed than an incandescent bulb.
Mercury
Phosphor.
Nitrogen
Mercury Vapor
mercury
1) electric light bulbs 2) fluorescent tubes 3) radio vacuum tubes 4) welding
Electric light bulbs, fluorescent tubes, and radio vacuum tubes and as an inert gas shield in arc welding.