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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
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Periodic Table

 Chemistry

Chapter - 4: Periodic Table

👉 All Chapter Contents 👈 

  • 4.1 Background of Periodic Table
  • 4.2 Characteristics of the Periodic Table
  • 4.3 Determination of the Position of Elements in the Periodic Table from Their Electronic Configuration
  • 4.4 Electronic Configurations of Elements are the Main Basis of the Periodic Table
  • 4.5 Some Exceptions in the Periodic Table
  • 4.6 Periodic Properties of Elements
  • 4.7 The Special Names of Elements Present in Various Groups
  • 4.8 Advantages of the Periodic Table
  • 4.9 Reactions Occurring in the Elements of the Same Group

Question Bank

4.1 Background of Periodic Table

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4.2 Characteristics of the Periodic Table

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4.3 Determination of the Position of Elements in the Periodic Table from Their Electronic Configuration 

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4.4 Electronic Configurations of Elements are the Main Basis of the Periodic Table

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4.5 Some Exceptions in the Periodic Table

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4.6 Periodic Properties of Elements

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4.7 The Special Names of Elements Present in Various Group

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4.8 Advantages of the Periodic Table

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4.9 Reactions Occuring in the Elements of the Same Group

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Secondary Chemistry

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