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ChemistryJEE Main 23 Jan 2026, Shift 2·Q9·MCQ·Easy–moderate

Classification & Periodicity · Ionisation enthalpy and ionic radius

Given below are two statements :

Statement I : The second ionisation enthalpy of Na is larger than the corresponding ionisation enthalpy of Mg.

Statement II : The ionic radius of OX2−\ce{O^{2-}} is larger than that of FX−\ce{F-}.

In the light of the above statements, choose the correct answer from the options given below.

  1. (1)Both statement I and statement II are true
  2. (2)Both statement I and statement II are false
  3. (3)Statement I is false but statement II is true
  4. (4)Statement I is true but statement II is false

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See the full 23 Jan 2026, Shift 2 paper