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ChemistryJEE Main 21 Jan 2026, Shift 2·Q10·MCQ·Easy–moderate

Classification & Periodicity · Atomic radii and electron gain enthalpy

Given below are two statements:

Statement-I: The correct order in terms of atomic/ionic radii is Al >> Mg >> MgX2+\ce{Mg^{2+}} >> AlX3+\ce{Al^{3+}}.

Statement-II: The correct order in terms of the magnitude of electron gain enthalpy is Cl >> Br >> S >> O.

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

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See the full 21 Jan 2026, Shift 2 paper