Concept explainers
Interpretation: The color of the light absorbed by the given complex ion has to be determined.
Concept introduction: The
The properties of the coordination compounds depend upon the primary and secondary valancy of the metal ion in the coordination sphere. The electrical conductivity depends upon the number of ions that are produced by complex.
The strong-field ligands results in pairing of electrons present in the complex and leads to diamagnetic species , while the low-field ligand do not have tendency to pair up the electrons therefore forms paramagnetic species.
The strong field ligands lead to splitting to a higher extent than the weak field ligands and the
Visible region: The
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Chemistry & Chemical Reactivity
- Platinum(II) forms many complexes, among them those with the following ligands. Give the formula and charge of each complex. (a) two ammonia molecules and one oxalate ion (C2O42-) (b) two ammonia molecules, one thiocyanate ion (SCN-), and one bromide ion (c) one ethylenediamine molecule and two nitrite ionsarrow_forwardGive the number of unpaired electrons in octahedral complexes with strong-field ligands for (a) Rh3+ (b) Mn3+ (c) Ag+ (d) Pt4+ (e) Au3+arrow_forwardAn aqueous solution of [Rh(C2O4)3]3− is yellow. Predict the approximate wavelength and predominant color of light absorbed by the complex.arrow_forward
- Identify, based on the position in the periodic table, the actinide elements among those in the following list: Co, Cm, Cd, Ce, Cf.arrow_forward[CuCl4]2− is green. [Cu(H2O)6]2+is blue. Which absorbs higher-energy photons? Which is predicted to have a larger crystal field splitting?arrow_forward3. Consider the blue-colored compound, [Cr(H₂O)]3³ and the yellow-colored compound, [Cr(CN)6]³. Calculate their magnetic moments and discuss their magnetic properties and their color.arrow_forward
- Which is more acidic and why? [Fe(H2O)6]2+ or [Fe(NH3)(H2O)5]2+arrow_forwardWhen water ligands in [Ti(H2O)6]3+ are replaced by CN- ligands to give [Ti(CN)6]3-, the maximum absorption shifts from 500 nm to 450 nm. Is this shift in the expected direction? Explain.arrow_forwardSolutions of [Co(NH3)6]2+, [Co(H2O)6]2+ (both octahedral) and [CoCl4]2– (tetrahedral) are colorful. One is pink, one is blue and the other is Based on the spectrochemical series, assign a color for each complex.arrow_forward
- For each complex, predict its structure, whether it is high spin or low spin, and the number of unpaired electrons present. [Cu (NH3)4]2+ [Ni (CN)4]2−arrow_forwardCobalt (II) chloride can form two complexes when dissolved in water: [Co(H2O)6]2+(aq) which is pink in colour, and [CoCl4]2- which is blue. The equilibrium system isarrow_forwardA chemist prepared aqueous solutions of the following complex ions: [Cr(OH)6]³, [Cr(NH3)6]³+, and [Cr(NH3)5Cl]²+. He obtained 3 different colors of solution: green, red-violet, and yellow. Match the colored solutions with the correct complex ion. O [Cr(NH3)6]³+ is red-violet; [Cr(NH3)5Cl]²+ is yellow; [Cr(OH)]³- is green O [Cr(NH3)6]³+ is yellow; [Cr(NH3)5Cl]²+ is red-violet; [Cr(OH)6]³¯ is green O [Cr(NH3)]³+ is yellow; [Cr(NH3) 5Cl]²+ is green; [Cr(OH)6]³ is red-violet [Cr(NH3)6]³+ is green; [Cr(NH3)5Cl]²+ is red-violet; [Cr(OH)]³ is yellowarrow_forward
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