STANDARD Chemistry Aufbau Principle MCQ Question
The correct order of increasing energy of atomic orbitals is
5p < 4f < 6s < 5d
5p < 6s < 4f < 5d
4f < 5p < 5d < 6s
5p < 5d < 4f < 6s
Correct Answer
Detailed Explanation
According to Aufbau principle, electrons are filled in various atomic orbitals in the increasing order of energy: 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p < 6s < 4f < 5d < 6p < 7s.
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