What Is the Formula of the Superconductor Whose Unit Cell

question 102

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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