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Asked Nov 25, 2019
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Which of the following subshells has the LOWEST energy? 3d, 4d, 4p, 5p, 5s

 

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Aufbau principle:

In atom, electros are filled in the order of ...

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p
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1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p energ

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