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Which of the Following Electron Configurations Is Not Allowed

Question 33

Multiple Choice

Which of the following electron configurations is not allowed?

A) 1s²2s²2p²
B) 1s²2s²2p⁴
C) 1s²2s³
D) 1s²2s²2p⁶3s²
E) 1s²2s²2p⁵

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