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Question: Answered & Verified by Expert
Which one of the following relations is correct with respect to first (I) and second (II) ionization potentials of sodium and Magnesium?
ChemistryClassification of Elements and Periodicity in PropertiesJEE Main
Options:
  • A \( \mathrm{I}_{\mathrm{Na}}>\mathrm{I}_{\mathrm{Mg}} \)
  • B \( \mathrm{I}_{\mathrm{Mg}}>\mathrm{II}_{\mathrm{Na}} \)
  • C \( \mathrm{II}_{\mathrm{Mg}}>\mathrm{II}_{\mathrm{Na}} \)
  • D \( \mathrm{II}_{\mathrm{Na}}>\mathrm{II}_{\mathrm{Mg}} \)
Solution:
1371 Upvotes Verified Answer
The correct answer is: \( \mathrm{II}_{\mathrm{Na}}>\mathrm{II}_{\mathrm{Mg}} \)
After losing one electron, Na+ ion gets noble gas configuration.

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