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(b) A. for the octahedral complex [Mn(OH2)6]3+ was measured to be 21000 cm-1. (i) Explain how Aois normally measured for transition metal complexes. [2 MARKS] (ii) P, the pairing energy, for the Mn3+ ion was found to be 28000 cm1. Predict an approximate magnetic moment for the complex [Mn(OH2)6]3+, explaining clearly each step in your reasoning and showing all your workings. [4 MARKS] (iii) Predict approximate magnetic moments for the complexes [MnCl6]³- and [Mn(CN)6] given that f factors for Cl- and CN are 0.78 and 1.70 respectively. [4 MARKS] (iv) Explain in terms of molecular orbitals why the f factor for Cl is much less than that for CN. [4 MARKS]

(b) A. for the octahedral complex [Mn(OH2)6]3+ was measured to be 21000 cm-1. (i) Explain how Aois normally measured for transition metal complexes. [2 MARKS] (ii) P, the pairing energy, for the Mn3+ ion was found to be 28000 cm1. Predict an approximate magnetic moment for the complex [Mn(OH2)6]3+, explaining clearly each step in your reasoning and showing all your workings. [4 MARKS] (iii) Predict approximate magnetic moments for the complexes [MnCl6]³- and [Mn(CN)6] given that f factors for Cl- and CN are 0.78 and 1.70 respectively. [4 MARKS] (iv) Explain in terms of molecular orbitals why the f factor for Cl is much less than that for CN. [4 MARKS]

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(b) A. for the octahedral complex [Mn(OH2)6]3+ was measured to be 21000 cm-1. (i) Explain how Aois normally measured for transition metal complexes. [2 MARKS] (ii) P, the pairing energy, for the Mn3+ ion was found to be 28000 cm1. Predict an approximate magnetic moment for the complex [Mn(OH2)6]3+, explaining clearly each step in your reasoning and showing all your workings. [4 MARKS] (iii) Predict approximate magnetic moments for the complexes [MnCl6]³- and [Mn(CN)6] given that f factors for Cl- and CN are 0.78 and 1.70 respectively. [4 MARKS] (iv) Explain in terms of molecular orbitals why the f factor for Cl is much less than that for CN. [4 MARKS]
Transcribed Image Text:(b) A. for the octahedral complex [Mn(OH2)6]3+ was measured to be 21000 cm-1. (i) Explain how Aois normally measured for transition metal complexes. [2 MARKS] (ii) P, the pairing energy, for the Mn3+ ion was found to be 28000 cm1. Predict an approximate magnetic moment for the complex [Mn(OH2)6]3+, explaining clearly each step in your reasoning and showing all your workings. [4 MARKS] (iii) Predict approximate magnetic moments for the complexes [MnCl6]³- and [Mn(CN)6] given that f factors for Cl- and CN are 0.78 and 1.70 respectively. [4 MARKS] (iv) Explain in terms of molecular orbitals why the f factor for Cl is much less than that for CN. [4 MARKS]
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