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Exercise 3 Consider two atoms A and B having respectively an ionization energy 5 eV and an electron affinity 4 eV. The distance of separation o A and B is 5Å. a) What is the energy required to transfer an electron from A to B? b) What is its bond energy during the formation of ionic bond between them? Identify the stability of the bond.

Exercise 3 Consider two atoms A and B having respectively an ionization energy 5 eV and an electron affinity 4 eV. The distance of separation o A and B is 5Å. a) What is the energy required to transfer an electron from A to B? b) What is its bond energy during the formation of ionic bond between them? Identify the stability of the bond.

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
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Exercise 3 Consider two atoms A and B having respectively an ionization energy 5 eV and an electron affinity 4 eV. The distance of separation o A and B is 5Å. a) What is the energy required to transfer an electron from A to B? b) What is its bond energy during the formation of ionic bond between them? Identify the stability of the bond. Exercise 4 For an Na* Cl ion pair, attractive and repulsive energies Ea and Er, respectively, depend on the distance between the ions r, according to: 7.32×10–6 ER 1.436x104 EA = r a) Determine the bonding energy Uo in term of the equilibrium interionic spacing ro. b) The equilibrium interionic spacing ro =0.282 nm and the Madelung constant 1.75, calculate Uo. Exercise 5 The net potential energy between two adjacent ions, U, may be represented by the sum in the following equation: b a U =-- + r a, b, and n are constants. a) Derive the expression of bonding energy Uo in terms of the parameters a, b, and n. b) Calculate the equilibrium interionic spacing ro for sodium iodide crystal. Knowing that the bond energy is 669.5×10° kJ / kmol, the Madelung constant 1.75 and n=9.5. 1:57 AM P Type here to search 51°F ロ G (× ENG 2/3/2022 (8) く
Transcribed Image Text:Exercise 3 Consider two atoms A and B having respectively an ionization energy 5 eV and an electron affinity 4 eV. The distance of separation o A and B is 5Å. a) What is the energy required to transfer an electron from A to B? b) What is its bond energy during the formation of ionic bond between them? Identify the stability of the bond. Exercise 4 For an Na* Cl ion pair, attractive and repulsive energies Ea and Er, respectively, depend on the distance between the ions r, according to: 7.32×10–6 ER 1.436x104 EA = r a) Determine the bonding energy Uo in term of the equilibrium interionic spacing ro. b) The equilibrium interionic spacing ro =0.282 nm and the Madelung constant 1.75, calculate Uo. Exercise 5 The net potential energy between two adjacent ions, U, may be represented by the sum in the following equation: b a U =-- + r a, b, and n are constants. a) Derive the expression of bonding energy Uo in terms of the parameters a, b, and n. b) Calculate the equilibrium interionic spacing ro for sodium iodide crystal. Knowing that the bond energy is 669.5×10° kJ / kmol, the Madelung constant 1.75 and n=9.5. 1:57 AM P Type here to search 51°F ロ G (× ENG 2/3/2022 (8) く
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