Questions
Consider the following electronic configuration
this configuration violates
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a
Hund's rule only
b
Pauli's principle and Aufbau's principle only
c
Hund's rule and Pauli's principle only
d
Aufbau's principle, Hund's rule and Pauli's principle
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Correct option is C
Aufbau's principle is not violated;(1)In ‘1s’ orbital both electrons have same spin;This violates Pauli's principle;(2)In ‘2p’ subshell all the three unpaired electrons in degenerate orbitals must have parallel spin to have maximum exchange energy. This is Hund's rule. But one of the unpaired electron has opposite spin. This violates Hund's rule.Talk to our academic expert!
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