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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

The electronic configurations for some neutral atoms are given below :

(A)

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

(B)

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

(C)

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

(D)

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

Which of these is expected to have the highest second ionisation enthalpy?

View answer and explanation

Correct option: B

(B)

Option B ((B)) is correct because after losing one electron, element B achieves a stable noble gas configuration, requiring significantly more energy for the second ionization.

JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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