state and explain Aufbau principle for scandium
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Scandium has three valence electrons. The aufbau principle tells us they should add to the lowest available energy sublevel. Therefore, the first electron goes into 3d. ... The higher repulsion energy of a second electron entering 3d makes it unfavorable compared with the second electron entering 4s.
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Answered by
6
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Hope it helps u
Explanation:
Scandium has three valence electrons. The aufbau principle tells us they should add to the lowest available energy sublevel. Therefore, the first electron goes into 3d. ... The higher repulsion energy of a second electron entering 3d makes it unfavorable compared with the second electron entering 4s.
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