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Bohrs Atomic Model

Bohrs Atomic Model Scientist Neils Bohr gave some corrections to Rutherford's atomic model in 1913. This corrected model is called the Bohr's atomic model. The main postulates of this model are - a) The electron moves around the nucleus in a circular motion, about an axis. This circular motion is called an energy level or orbit. They are also known as the shell or permanent orbit or principal energy level. Electrons do not absorb or emit any energy when they revolve these fixed orbits. If we express the permanent orbit as n, then n = 1, 2, 3, 4, etc.  In other words, if n = 1, the principal energy level is K,  when n = 2, L is the principal energy level,  when n = 3, M is the principal energy level,  when n = 4, N is the principal energy level, etc. b) According to Bohr's model, the angular momentum of an electron in an energy level is mvr =  nh / 2𝜋 . Here, m = the mass of the electron (9.11×10 -31  kg) r = the radius of the orbit that the electron follows v = the veloc

Chemistry in Our Lives

 Chemistry

Chapter - 12: Chemistry in Our Lives

👉 All Chapter Contents 👈 


  • 12.1 Domestic Chemistry / Household Chemistry
  • 12.2 Chemistry for Cleanliness
  • 12.3 Chemistry in Agriculture and Industries


Question Bank

12.1 Domestic Chemistry / Household Chemistry

  • What is the formula of edible salt or table salt?
  • What is salt harvesting?
  • Write the uses of sodium chloride.
  • What is the chemical name of baking soda?
  • What is baking powder?
  • Write the preparation of baking soda.
  • Write the uses of baking soda.

12.2 Chemistry for Cleanliness

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12.3 Chemistry in Agriculture and Industries

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Secondary Chemistry


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