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JEE Main202126 Aug 2021Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

The incorrect statement is:

Options

  1. AF 2 is a stronger oxidizing agent than Cl 2 in aqueous solution.
  2. BOn hydrolysis ClF forms HOCl and HF .
  3. CCl 2 is more reactive than ClF .
  4. DF 2 is more reactive than ClF .

Correct answer

C. Cl 2 is more reactive than ClF .

Step-by-step solution

In general, interhalogen compounds are more reactive than halogens (except fluorine). This is because X - X ' bond in interhalogens is weaker than X - X bond in halogens except F - F bond. All these undergo hydrolysis giving halide ion derived from the smaller halogen and a hypohalite (when XX ' ), halite (when XX 3 ' ), halate (when XX 5 ' ) and perhalate (when XX 7 ' anion derived from the larger halogen. XX ' + H 2 O → HX ' + HOX

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