The compound \[YB{{a}_{2}}C{{u}_{3}}{{O}_{7}}\] which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual \[+\,3\] oxidation state [IIT 1994]

The compound \[YB{{a}_{2}}C{{u}_{3}}{{O}_{7}}\] which shows supercondu

1.	The compound \[YB{{a}_{2}}C{{u}_{3}}{{O}_{7}}\] which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual \[+\,3\] oxidation state [IIT 1994]
A.	3/7
B.	7/3
C.	3
D.	7
Answer» C. 3

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The compound \[YB{{a}_{2}}C{{u}_{3}}{{O}_{7}}\] which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual \[+\,3\] oxidation state [IIT 1994]

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