Facts about nitrogen

  • The first and foremost thing that strikes our mind when we think about nitrogen is that it is the abundantly found element in the earth environment. And it is the fourth largest abundantly found element in this universe.
  • Chemical structure and composition of nitrogen element
Atomic symbol N
Atomic number 7
Atomic mass number 14
Density 0.0012506
Boiling point -195.79°C
Melting point -210°C
Number of isotopes 16
Valence 3 or 5
  • This nitrogen cycle is very essential for maintaining terrestrial balance.
  • The nitrogen available in the atmosphere cannot be directly accessible. So the nitrogen cycle involves 5 different steps for the conversion of atmospheric nitrogen to its compounds. The 5 steps of nitrogen cycle are nitrogen fixation, nitration, assimilation, ammonification and denitrification.
  • Nitrogen is a non-metal and it is colourless, taste less and odourless.
  • Though the nitrogen gas is inert, the bacteria present in plants fix them and make it available for plants and animals to make amino acids and proteins.
  • The undissolved nitrogen can cause death of aquatic plants and animals. This is because the dissolved nitrate involves with blood oxygen level and causes death in aquatic life.
  • Other forms of life like animals and human beings get the required nitrogen for metabolism by consuming organic matter.
  • Nitrogen plays a prominent role in the aura formation. Aura is a natural phenomenon occurring in Arctic and Antarctic region. Aura is created when the fast moving electrons collide with oxygen and nitrogen in our atmosphere.
  • Liquid nitrogen is the most frequently used coolant because of its high melting point.
  • Industrial nitrogen fixation takes place at high pressure and extremely high temperature of 400°C.
  • The photochemical and electrochemical reactions happening in the atmosphere help in atmospheric fixation of nitrogen.

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