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Question
Assertion :The electronic configurations in which all of the orbitals of the same subshell are either completely filled or are exactly half filled are more stable. Reason: The completely filled or exactly half filled shells possess a symmetrical distribution of electrons and allow their maximum number of exchanges.
Assertion :The electronic configurations in which all of the orbitals of the same subshell are either completely filled or are exactly half filled are more stable. Reason: The completely filled or exactly half filled shells possess a symmetrical distribution of electrons and allow their maximum number of exchanges.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Symmetry:-Half filled and fully filled orbitals are more symmetrical than any other configuration and Symmetry leads to greater stability.
Exchange energy:-Exchange of the position leads to decrease in the energy (exchange energy), a greater number of exchanges take place in half filled and fully filled orbitals leads to greater stability.
Symmetry:-Half filled and fully filled orbitals are more symmetrical than any other configuration and Symmetry leads to greater stability.
Exchange energy:-Exchange of the position leads to decrease in the energy (exchange energy), a greater number of exchanges take place in half filled and fully filled orbitals leads to greater stability.
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