Argon's state of mater is a gas at room temperature, its atomic number is 18.The atomic mass of Argon is 39.948, and it is in the 3rd period and has the group number of 18. It is a noble gas and it is a nonmetal.
it is used in welding
Making light bulbs glow
its is also in light bulbs which helps it glow
it is used when they grow crystals as well