JEE Main Chemistry question

Which electronic configuration of an element has an abnormally high difference between its second and third ionization energies?

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

A large jump between successive ionization energies occurs right after all valence electrons have been removed, exposing a stable noble-gas-like core. Configuration (D) has exactly two electrons in the valence

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Question ID VK-133867