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The noble gases include helium, neon, argon, krypton, xenon, and radon. 1  Helium has the atomic number two and is the second most abundant element in the universe. 2  Neon has the atomic number ten and is commonly used in lamps for the red-orange glow it gives off when exposed to electricity.  Argon has the atomic number 18.
Noble Gases. The noble gases consist of group 18 (sometimes reffered to as group O) of the periodic table of elements. The noble gases have very low boiling and melting points and are all gases at room temperature. They are also very nonreactive as they already have a full valence shell with 8 electrons. Therefore, the noble gases have little tendency to lose or gain electrons.