नोबल गैस
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  • नोबल गैस (Noble gases ; inert gases) : found in the periodic table’s Group 18.
  • They include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
  • they exhibit very low reactivity under normal conditions.
  • Noble gases have a stable electronic configuration with a full outer shell of electrons (except for helium, which has only two electrons in its outer shell).
  • Noble gases have low boiling points means they exist as gases at room temperature and pressure.
  • In their elemental form, noble gases exist as Monoatomic
  • helium is used in cryogenics, as a coolant in nuclear reactors, and in gas chromatography.
  • Neon is used in lighting, such as neon signs,
  • argon is used in welding and as a shielding gas in incandescent light bulbs, and
  • xenon is used in specialized lighting, anesthesia, and in certain medical imaging techniques.
  • Radon, is radioactive.