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Four successive members of the first row transition elements are listed below with their atomic numbers.

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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 ionisation enthalpy?

(a) Vanadium (Z = 23)

(b) Chromium (Z = 24)

(c) Manganese (Z = 25)

(d) Iron (Z = 26)

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Correct option (c) Manganese (Z = 25)

Explanation :

To find ionization enthalpy we first see electronic configuration. Then we see shell. If shell are same then see charge. Then see extra stability (Half filled and fully filled)

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