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Which of the following element has the highest ionisation enthalpy?(a) Scandium(b) Vanadium(c) Copper(d) ZincI have been asked this question during an interview for a job.The query is from General Properties of the Transition Elements (D-Block) topic in division D and F-Block Elements of Chemistry – Class 12

Answer»

Right choice is (d) Zinc

The BEST explanation: Ionisation enthalpy shows only a little variation on moving ALONG the PERIOD of d-block elements. The first ionisation enthalpy of zinc, cadmium and MERCURY are higher than the other elements in their respective PERIODS because of the fully filled (n-1)d^10ns^2 configuration.



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