JEE Main Chemistry question
Which of the following configurations is associated with the biggest jump between the 2nd and 3rd ionisation energies?
Answer: (C)
Solution
A large jump in successive ionisation energies occurs when the next electron must be removed from a new, inner (and therefore much more stable) shell, after all valence electrons have already been removed. Configuration (C), (magnesium-like), has exactly 2 valence electrons in the subshell;
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