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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Which of the following configurations is correct for iron ?

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Correct option: D

1 s^2, 2 s^2 2 p^6, 3 s^2 3 p^6, 4 s^2, 3 d^6

Option D (

1 s^2, 2 s^2 2 p^6, 3 s^2 3 p^6, 4 s^2, 3 d^6

) is correct because it represents the correct electronic configuration of iron (Fe), which has 26 electrons.

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