33. Which of the following complexes can exhibit optical isomerism? (en = H2N–CH2–CH2–NH2 and is bidentate) (A)cis–Co(NH3)4Cl2 (B) trans–Co(en)2Br2 (C) cis–Co(en)2Cl2 (D) Co(NH3)3Cl3 (E) none of these

35. The complex ions of Zn2+ are all colorless. The most likely explanation for this is: (A) Zn2+ is paramagnetic. (B) Zn2+ exhibits “d orbital” splittings in its complexes such that they absorb all wavelengths in the visible region. (C) Since Zn2+ is a d10 ion, it does not absorb visible light even though the “d orbital” splittings are correct for absorbing visible wavelengths. (D) Zn2+ is not a transition metal ion. (E) None of these is correct.

33. Which of the following complexes can exhibit optical isomerism? (en = H2N–CH2–CH2–NH2 and is bidentate)
(A)cis–Co(NH3)4Cl2
(B) trans–Co(en)2Br2
(C) cis–Co(en)2Cl2
(D) Co(NH3)3Cl3
(E) none of these

相關試題

相關試卷

33. Which of the following complexes can exhibit optical isomerism? (en = H2N–CH2–CH2–NH2 and is bidentate)(A)cis–Co(NH3)4Cl2(B) trans–Co(en)2Br2(C) cis–Co(en)2Cl2(D) Co(NH3)3Cl3(E) none of these

相關試題

相關試卷

33. Which of the following complexes can exhibit optical isomerism? (en = H2N–CH2–CH2–NH2 and is bidentate)
(A)cis–Co(NH3)4Cl2
(B) trans–Co(en)2Br2
(C) cis–Co(en)2Cl2
(D) Co(NH3)3Cl3
(E) none of these