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

The oxidation number of the underlined atom in the following species

(Identify the incorrect statement)

  1. Cu2O¯ is -1
  2. Cl¯O3- is +5
  3. KrCr2¯O7 is +6
  4. HAu¯Cl4 is +3

Solution

Ox. state of "O" in Cu2O=-2
Ox. state of "Cl" in ClO3-=+5
Ox. state of "Cr" in K2Cr2O7=+6
Ox. state of "Au" in HAuCl4=+3
∴ (1) is incorrect

Asked in: NEET 2020 (Phase 2)

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