Which of the Following Electron Configurations Is Not Possible for an Atom

question 5

Multiple Choice

Which of the following electron configurations is not possible for an atom in an excited state?

• A)1 s ²2 s ²2 p ⁶3 s ²3 p ⁶3 d ¹⁰4 s ¹4 p ¹
• B)1 s ²2 s ²2 p ⁶3 s ¹3 p ⁵
• C)1 s ²2 s ²2 p ⁶3 s ²3 p ²3 d ²
• D)1 s ²2 s ²2 p ⁶3 s ²3 p ⁶3 d ¹⁰4 s ²
• E)1 s ²2 s ²2 p ⁶3 s ²3 p ⁶3 d ¹⁰4 s ¹⁴ p ³

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