What Is the Formula of the Superconductor Whose Unit Cell

question 70

Multiple Choice

What is the formula of the superconductor whose unit cell is shown below? (The Y and Ba atoms are in the middle of the cell.)

• A)YBa₂Cu₃O₉
• B)YBa₂Cu₄O₅
• C)YBa₂Cu₂O₇
• D)YBa₂Cu₄O₇
• E)YBa₂Cu₃O₇

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