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MHT CET Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesMHT CET

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?

Answer: (D)

Solution

The third ionisation removes an electron from ; is (exactly half-filled, extra stable), so removing the third electron from Mn is the hardest,

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Question ID VK-074879