Redox Reactions And Electrochemistry Ques 365

Question: In the compound YBa2Cu3O7 which shows superconductivity, what is the oxidation state of cu- Assume the rare earth element yttrium is in its usual +3 oxidation state.

Options:

A) +73

B) −73

C) +53

D) −53

Show Answer

Answer:

Correct Answer: A

Solution:

[a] (YBa2Cu3O7) 3+(2×2)+3x−14=0
∴x=+73

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