12th Class Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व

  • question_answer 82)
      Why first ionisation enthalpy of Cr is lower than that of Zn?

    Answer:

                        Ionisation enthalpy of Cr is less than that of Zn because Cr has stable configuration. In case of zinc, electron comes out from completely filled 4s - orbital. So, removal of electron from zinc requires more energy as compared to the chromium. .


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