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why does the actual electronic configuration of thorium different when compared to the electronic configuration written by Aufbau principle

why does the actual electronic configuration of thorium different when compared to the electronic configuration written by Aufbau principle

Grade:11

1 Answers

Yash Patari
askIITians Faculty 2123 Points
4 months ago

dear student
Exceptions are based on the fact thathalf-full or full shells or subshells are more stable than partially filled ones. ... The electron occupies the higher energy level shell in violation of the Aufbau principle because the atom is more stable that way.

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