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MHT CET Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesMHT CET

The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23,24,25 and 26. Which one of these may be expected to have the highest second ionisation enthalpy?

Answer: (B)

Solution

The second ionisation of Cr removes an electron from the stable half-filled configuration of Cr, which requires the most energy

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Question ID VK-074825