Among the following, the species in which the oxidation number of an element is +6
Answer»
Answer: CrO2Cl2 The oxidation number of manganese in MnO4− is 7. The oxidation number of chromium in Cr(CN)63− is +3. The oxidation number of nickel in NiF62− is +4. The oxidation number of chromium in CrO2Cl2 is +6. Hence, the species in which an element has oxidation number +6 is CrO2Cl2.