Introduction
Noble gas is any of 7 chemical elements, which make up group 18 (villa) of periodic table, are neon (Ne), helium (He), krypton (Kr), argon (Ar), radon (Rn), xenon (Xe), and ununoctium (Uon). Noble gases are tasteless, colorless, odorless, nonflammable gases. From the earliest time, they have actually been labeled as group O. This is because it was discovered that their atoms could not actually combine with the atoms of the other elements to form the chemical bonds. They were called inert or rare gases because they were thought to be chemically inert or to be exceedingly rare. However, ...
