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JEE Main levelSingle correct optionDifficulty 2 of 3bn092

Assertion (A): is named oxygen difluoride and is classed as a fluoride of oxygen, not as an oxide. Reason (R): fluorine is more electronegative than oxygen and is always assigned , so oxygen in has oxidation number .

  1. ABoth A and R are true and R is the correct explanation of A
  2. BBoth A and R are true but R is not the correct explanation of A
  3. CA is true but R is false
  4. DA is false but R is true

Answer: A

In each F is , so O is ; the more electronegative element forms the -ide part, so the compound is a fluoride of oxygen (oxygen difluoride). Both statements are true and R explains A.
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