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Manipal MET2017ChemistryClassification of Elements and Periodicity in Properties

The set representing the correct order of first ionisation potential is

Options

  1. AK Na Li
  2. BBe Mg Ca
  3. CB C N
  4. DGe Si C

Correct answer

B. Be Mg Ca

Step-by-step solution

The first ionisation potential ( IE ₁ ) decreases from top to bottom in a group. Hence, the order of ionisation potential is as : Be Mg Ca

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