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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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From the ground state electronic configurations of the elements given below, pick up the one with highest value of second I.E.

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Correct option: B

1{s^2}2{s^2}2{p^6}3{s^1}

The correct answer is B (

1{s^2}2{s^2}2{p^6}3{s^1}

) because removing the second electron from this configuration requires breaking a stable noble gas configuration, leading to a very high second ionization energy.

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