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JEE Main202529 Jan 2025Morning ShiftChemistryStructure of AtomActual

Given below are two statements : Statement ( ( I )): The radii of isoelectronic species increases in the order. ( Mg ²⁺ Na ⁺ F ⁻ O ²⁻ ) Statement (II): The magnitude of electron gain enthalpy of halogen decreases in the order. ( Cl F Br I ) In the light of the above statements, choose the most appropriate answer from the options given below :

Options

  1. AStatement I is incorrect but Statement II is correct
  2. BStatement I is correct but Statement II is incorrect
  3. CBoth Statement I and Statement II are incorrect
  4. DBoth Statement I and Statement II are correct

Correct answer

D. Both Statement I and Statement II are correct

Step-by-step solution

r q ⁻ (for isoelectronic species) 1 q⁺ Statement I is correct Magnitude of electron gain enthalpy Cl > F > Br > I

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