Which of the following electronic configurations represents a sudden large gap between the values of second and third ionisation energies of an element?

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1s2,2s22p3

1s2,2s22p6,3s23p3

1s2,2s22p6,3s23p1

1s2,2s22p6,3s2

answer is D.

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Detailed Solution

1s22s22p63s2 electronic configuration of the element represents a sudden large gap between the values of second and third ionisation energies.

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