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JEE Main202622 January 2026Evening ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Given below are two statements : Statement I : C Statement II : S > Se > Te > Po > O is the correct order in terms of the magnitude of electron gain enthalpy values. In the light of the above statements, choose the correct answer from the options given below :

Options

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

Correct answer

D. Both Statement I and Statement II are true

Step-by-step solution

Statement I: Ionization enthalpy generally increases across a period from left to right. However, Nitrogen ( 2s^2 2p^3 ) has a stable half-filled electronic configuration, making it harder to remove an electron compared to Oxygen ( 2s^2 2p^4 ). Thus, the order is C Statement I is true. Statement II: For Group 16 elements, Oxygen has an exceptionally low magnitude of electron gain enthalpy due to its small size and high inter-electronic repulsions in the 2p subshell. The magnitude of electron gain enthalpy decreases

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