why is argon unreactive
The Noble Gases. The elements of Group VIII of the Periodic Table are gases which have closed shells and are unreactive chemically. Helium, neon, argon and krypton are used in gas discharge decorative ligthing, called neon lights.Argon is used to fill incandescent light bulbs to inhibit the evaporation of the tungsten filaments and increase bulb life. Xenon is used in electronic flash tubes for cameras and other flash tubes.elium, neon, argon and krypton are used in gas discharge decorative ligthing, called neon lights. Argon is used to fill incandescent light bulbs to inhibit the evaporation of the tungsten filaments and increase bulb life.