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JEE Main levelOne or more correct optionsDifficulty 2 of 3pt143

Select the correct statements about electron gain enthalpy.

  1. ASulfur releases less energy than oxygen on gaining its first electron
  2. BChlorine releases more energy than fluorine on gaining an electron
  3. CBromine releases more energy than iodine on gaining an electron
  4. DArgon has a positive first electron gain enthalpy

Answer: B, C, D

Cl (-349) is more negative than F (-328); Br (-325) more than I (-295); Ar is a noble gas (positive). S (-200) releases more than O (), so the last statement is false.
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