Argon
Ar
Argon
Argon's atomic number is 18. It's mass number rounds up to 40. Argon is located in period 3 and group 18 (noble gas family). Argon is a non metal and the common state of matter is gas.
Fluorescent lights and low energy light bulbs
Argon is used to illuminate low energy light bulbs.
Double glazed windows
Helps retain more heat in the double glazed glass
Welding
Argon is also used in welding tools
Uses
Argon is used to power low energy light bulbs. It's also used in double glazed windows to retain heat. Another use for argon is in welding tools.