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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The electronic configuration having maximum difference in first and second ionization energies is

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Correct option: D

1 s^2 2 s^2 2 p^6 3 s^1

The correct answer is D (

1 s^2 2 s^2 2 p^6 3 s^1

) because removing the second electron from this configuration requires significantly more energy as it involves breaking into a stable, completely filled s-orbital.

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The compounds of the s-block elements, with the exception of lithium and ...

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