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Which of the following sequence is correct as per Aufbau principle ?

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in Chemistry by (24.9k points)
Which of the following sequence is correct as per Aufbau principle ?
A. 3s lt 3d lt 4s lt 4p
B. 1s lt 2p lt 4s lt 3d
C. 2s lt 5s lt 4p lt 5d
D. 2s lt 2p lt 3d lt 3p
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Correct Answer - B
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