77. Which of the following is the most representative element in Wilkinson's hydrogenation catalyst?
(A)Fe
(B)Co
(C)Ni
(D)Pd
(E)Rh
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統計: A(0), B(1), C(0), D(1), E(6) #3222844
統計: A(0), B(1), C(0), D(1), E(6) #3222844