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NEET2020ChemistryRedox ReactionsActual

The oxidation number of the underlined atom in the following species (Identify the incorrect statement)

Options

  1. ACu 2 O ¯ is -1
  2. BCl ¯ O 3 - is +5
  3. CKr Cr 2 ¯ O 7 is + 6
  4. DH Au ¯ Cl 4 is + 3

Correct answer

A. Cu 2 O ¯ is -1

Step-by-step solution

Ox . state of " O " in Cu 2 O = - 2 Ox . state of " Cl " in ClO 3 - = + 5 Ox . state of " Cr " in K 2 Cr 2 O 7 = + 6 Ox . state of " Au " in HAuCl 4 = + 3 ∴   ( 1 ) is incorrect

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