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JIPMER2008ChemistryClassification of Elements and Periodicity in Properties

The set representing the correct order for first ionisation potential is

Options

  1. A( K Na Li )
  2. B( Be Mg Ca )
  3. CB ( ) C ( ) N
  4. D( Ge Si C )

Correct answer

B. ( Be Mg Ca )

Step-by-step solution

The IP decreases in a group on moving downward because atomic radius increases hence the correct order is : ( Be Mg Ca )

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