Concept explainers
Interpretation: The metal ion that can form both low-spin and high-spin complexes potentially to be predicted.
Concept introduction:
Origin of color: The coordination compound exhibit color due to d-d transitions. Absorption of wavelength from visible region which excites electron from the lower energy level to the higher energy level transmits the complementary color. Thus, the coordination compound looks colored.
Spectrochemical series: The list of ligands arranged in an ascending order of
Crystal field splitting: The energy gap between the splitting of d-orbitals of the metal ion in presence of ligands is known as the crystal field splitting
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Chemistry: Atoms First
- For the low-spin coordination compound [Fe(en)2Cl2]Cl, identify the following.(a) the oxidation number of iron(b) the coordination number for iron(c) the coordination geometry for iron(d) the number of unpaired electrons per metal atom(e) whether the complex is diamagnetic or paramagnetic(f) the number of geometric isomersarrow_forwardSketch the following complexes. If more than one enantiomer exists, sketch just one.(a) mer-Cr(NH3)3(Cl)3 (b) cis-[Fe(H2O)4(CN)2]Cl (c) trans-[Ni(en)2Cl2] (d) fac-Co(NH3)3(CN)3arrow_forwardThe complex ion Fe(CN)6³ is paramagnetic with one unpaired electron. The complex ion Fe(SCN)6³ has five unpaired electrons. Draw the crystal field diagrams of two complex ions. Which compound absorbs light with the shorter wavelength? Where does SCN- lie in the spectrochemical series relative to CN-? (hint: stronger or weaker 4. (a) (b) (c) field)arrow_forward
- Which of these compounds is expected to be colorless? (A) K4[Fe(CN)6] (B) K4[Co(CN)6] (C) K2[Ni(CN)4] (D) K2[Zn(CN)4]arrow_forwardAssign a systematic name to each of the following chemical compounds. Compound Name (a) Na[Mn(CN)5l fill in the blank 1 (b) [Cu(bipy)2l]NO3 fill in the blank 2 (c) [Fe(CO)5] fill in the blank 3 (d) [Cr(NH3)3(CN)3] fill in the blank 4arrow_forwardIdentify each of the following coordination complexes as either diamagnetic or paramagnetic: (a) [Ag(NH3)2]+ (b) square planar [Cu(NH3)4]2+arrow_forward
- Which of the following octahedral complex ions will havethe fewest number of unpaired electrons?(a) [Cr(H2O)6]3+ (b) [V(H2O)6]3+ (c) [FeF6]3- (d) [RhCl6]3-(e) [Ni(NH3)6]2+arrow_forwardIn the following list, identify a transition metal cation that cannot be used to distinguish between strong-field and weak-field ligands in octahedral complexes? (A) Cr3+ (B) Fe3+ (C) Co3+ (D) None of them (any of them can be used)arrow_forwardFor complexes of the same metal ion with no change in oxidation number, the stability increases as the number of electrons in the t2g orbitals increases. Which complex in each of the following pairs of complexes is more stable?(a) [Fe(H2O)6]2+ or [Fe(CN)6]4−(b) [Co(NH3)6]3+ or [CoF6]3−(c) [Mn(CN)6]4− or [MnCl6]4−arrow_forward
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