Which elements do not follow aufbau principle?
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Answered by
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Heya❤
Exceptions:
☆ Copper (Cu)
☆ Chromium (Cr)
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Answer:
According to the Aufbau principle, these electrons should always fill shells and subshells according to increasing energy levels. Elements such as copper and chromium are exceptions because their electrons fill and half-fill two subshells, with some electrons in the higher energy level shells.
Explanation:
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