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AP EAMCET202022 Sep 2020Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which halogen can be oxidised by concentrated nitric acid?

Options

  1. AFluorine
  2. BChlorine
  3. CBromine
  4. Dlodine

Correct answer

D. lodine

Step-by-step solution

Reducing properties increase from fluorine to iodine, so it is oxidised by nitric acid. I ₂+10 HNO ₃ 2 HIO ₃+10 NO ₂+4 H ₂ O Nitric acid oxidises iodine to iodic acid, HIO ₃ and not periodic acid HIO ₄ , which is of a higher oxidation state. Hence, option (4) is the correct.

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