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  • Why was a change in the Bohr Model of atom required? Due to which important development (s), concept of movement of an electron in an orbit was replaced by, concept of probability of finding electron in an orbital?

Why was a change in the Bohr Model of atom required? Due to which important development (s), concept of movement of an electron in an orbit was replaced by, concept of probability of finding electron in an orbital? What is the name given to the changed model of an atom?

 

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In view of the shortcoming of the Bohr's model, attempts were made to develop a more suitable and general model for atoms.

Two important developments which contributed significantly in the formulation of such a model were:

  1. Dual behaviour of matter,
  2. Heisenberg uncertainty principle.

Werner Heisenberg, a German physicist in 1927, stated the uncertainty principle, which is the consequence of duel behaviour of matter and radiation. One of the important implications of the Heisenberg Uncertainty Principle is that it rules out the existence of definite paths or trajectories of electrons and other similar particles.

Quantum mechanics is the theoretical science that deals with the study of the motions of the microscopic objects that have both observable wave-like and particle-like properties. The name of the changed model of the atom is the Quantum Mechanical Model of the atom.

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