AIPMT PRELIMS 2005 Chemistry Ionization Enthalpy MCQ Question
Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?
Vanadium (Z = 23)
Chromium (Z = 24)
Iron (Z = 26)
Manganese (Z = 25)
Correct Answer
Detailed Explanation
Chromium has a half-filled d-subshell, which provides extra stability, leading to a higher third ionization enthalpy.
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