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COMEDK2023ChemistryClassification of Elements and Periodicity in Properties

The correct decreasing order of negative electron gain enthalpy for C , Ca , Al , F and O is

Options

  1. AF > O > C > Al > Ca
  2. BCa > Al > O > F > C
  3. CAl > F > Ca > C > O
  4. DF > C > O > Ca > Al

Correct answer

A. F > O > C > Al > Ca

Step-by-step solution

Electron gain enthalpy becomes less negative as we move down in a group white it becomes more negative along the period. Correct order is F > O > C > Al > Ca

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