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Question
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, the concept of probability of finding electron in an orbital? What is the name given to the changed model of atom?
Solution
The drawbacks of Bohr’s model were (i) it was unable to explain the spectra for multi-electron systems (ii) it could not explain the molecule formation through chemical bonds.
The two important developments that contributed significantly towards the change of concept of movement of an electron in an orbit was replaced by, the concept of probability of finding an electron in an orbital were (i) Dual nature of matter (ii) Uncertainty Principle.
Quantum mechanical model of the atom is the name of the new model.
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