19 .Determine the type of structural isomerism that exists in the following pairs of compounds: [Co(NO2)(NH3)5]Br2 and [Co(ONO)(NH3)5]Br2.
(A)ionization isomers
(B)geometrical isomers
(C)optical isomers
(D)coordination isomers
(E)linkage isomers

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統計： A(1), B(2), C(3), D(5), E(12) #2275865