(4) There are six noble gases.(i) Helium (ii) Neon (iii) argon(iv) Krypton (v) Xenon (vi) Radon All of these gases are found in the atmosphere. They makeup around 0.96% of the atmosphere.Noble gases in atmosphere: (i) Argon (0.93%) (ii) Neon (0.0018%) (iii) Helium (0.0005%) (iv) Krypton (0.0001%) (v) Xenon (0.0001005%).