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 [Fe (SCN)2 (o − fen)2 ]ClO4 complex answer: A. If the length of maximum absorption of the complex is 420 nm, what is the color of the complex B. Calculate the doubling of the crystalline field in kJ/mol and in cm-1.arrow_forwardWhich ion would represent the pink complex? Question 1 options: Co(H2O7)-3 Co(H3O) H2O None of thesearrow_forwardFill in the space below with DIGITS only. The condition for a complex to be low spin; from the coupling energy of the crystal field cleavage energy of this complex. Gap 1. Fill the blanks, read the relevant text. large (1) / small (2).arrow_forward
- Consider the coordination compound [Ni(NH3)6]Cl2 and select all of the statements that are TRUE below. 1. The chloride ion is the ligand. 2. [Ni(NH3)6]2+ is the complex ion. 3. The oxidation state of nickel is +4. 4. Nickel and ammonia are covalently bonded. 5. Ammonia is a molecule, not an ion.arrow_forwardForeach of the following pairs of complexes, identify the one that has the larger Crstal Field Stabilization Energy. A) [FeCl4]2- B) [CoCl4]2-arrow_forwardInstructions: Complex: [Fe(S2CNMe2)3], wherein Me stands for methyl group (-CH3). Give the full name of the complex. If we were to replace one of the (S2CNMe2) ligands with two CN- ligands, what will be the new chemical formula?arrow_forward
- Does coordination of NO as a ligand to an electron-rich transition metal cause the N—O bond length to increase or decrease? Justify your answer.arrow_forwardTwo different iron 2+ metal complexes were found in a sample of the earth’s core taken in Greenland. One of the complexes appears red while the other is yellow. Chemical analysis revealed the following formulas: Complex A formula: [FeCl6]4-Complex B formula: [Fe(CO)6]2+ a. Which complex has the largest octahedral splitting energy? Please provide at least one sentence explaining your answer. b. Which complex would you expect to have the red color? Please provide at least one sentence explaining your answer. c. Explain why complex A is affected by a magnetic field where complex B is not. Use the following template to help build your explanation.arrow_forwardGive the systematic name for the following coordination compound: [NiCl₄]²⁻arrow_forward
- What is the overall charge of tetraammineoxalatoosmium(II) complex? Is the coordination neutral, anionic or cationic?arrow_forwardThe CrF64- ion is known to have four unpaired electrons. Does the F- ligand produce a strong or weak field?arrow_forwardReally hoping for solutions since I’m having a hard time with this. Pls. skip if unsure or not willing to answer. Thanks in advance. Which of the following is needed to form a coordination compound ? a. complex ion b. Arrhenius base c. central metal ion d. bidentate ligand ------- Al(OH)3. is known to be amphoteric. What will be formed when it is reacted with aqueous NaOH ? a. [Al(OH)4]+ soluble b. soluble. Al+3 will be formed c. no reaction. Al(OH)3 will only react with acid. d. [Al(OH)4]+ insoluble Following pKa and pkb of following acid and bases, choose which one you will use as buffer at pH 9 Phenol pKa = 10.00 Pyridine pKb = 8.82 Aniline pKb = 9.13 a. all can be used as buffers b. pyridine c. aniline d. phenol ----------------- Which of the following is true about chemical equilibrium ? a. The chemical equilibrium constant can be calculated from Gibbs Free Energy at 298 K only. b. If rate of forward reaction equals the rate of backward reaction, the system is said to be in…arrow_forward
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning