問題詳情
44. Which of the following statements about the complex ion Co(en)2Cl2+ (en = ethylenediamine,NH2CH2CH2NH2)is true?
(A) the geometric isomers of the complex ion have identical chemical properties
(B) the complex ionexhibits two geometric isomers (cis and trans) and two optical isomers
(C) because en is a strongfield ligand (large A), the complex ion is paramagnetic
(D) the complex ion exhibits cis and transgeometric isomers, but no optical isomers
(E) the complex ion contains Co(l)
參考答案