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  • 7: N-Nitrogen (नाइट्रोजन)
  • नाइट्रोजन (Nitrogen) :  nonmetaldiatomic molecule (N2)  ;  78% of Earth’s atmosphere by volume.
  • Nitrogen is  key component of amino acids, which are the building blocks of proteins, and nucleic acids like DNA and RNA, which are essential for the transmission of genetic information.
  • It is obtained through the fractional distillation of liquid air. used to create an inert atmosphere in various industrial processes.
  • nitrogen fertilizers : These fertilizers can be synthesized through the Haber-Bosch process, which involves the reaction of nitrogen gas with hydrogen gas to produce ammonia (NH3).
  • as a protective gas in food packaging to extend the shelf life of perishable products.
  • Nitrogen can be liquefied at very low temperatures (-196°C or -320.44°F) and is commonly used as a coolant in various applications, such as in cryogenics, medical treatments, and food preservation.
  • nitrous oxide (N2O) and nitrogen oxides (NOx), can contribute to air and water pollution and have environmental impacts such as smog formation and eutrophication of water bodies.
    • Eutrophication is a natural process that occurs when water bodies, such as lakes, rivers, and coastal areas, become enriched with nutrients, primarily nitrogen and phosphorus.