(a) Sketch the molecular orbitals of the H2- ion and draw itsenergy-level diagram. (b) Write the electron configuration ofthe ion in terms of its MOs. (c) Calculate the bond order inH2-. (d) Suppose that the ion is excited by light, so that anelectron moves from a lower-energy to a higher-energy molecularorbital. Would you expect the excited-state H2- ion to bestable? (e) Which of the following statements about part (d) is correct: (i) The light excites an electron from a bonding orbitalto an antibonding orbital, (ii) The light excites an electronfrom an antibonding orbital to a bonding orbital, or (iii)In the excited state there are more bonding electrons thanantibonding electrons?

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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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(a) Sketch the molecular orbitals of the H₂^- ion and draw its
energy-level diagram. (b) Write the electron configuration of
the ion in terms of its MOs. (c) Calculate the bond order in
H₂^-. (d) Suppose that the ion is excited by light, so that an
electron moves from a lower-energy to a higher-energy molecular
orbital. Would you expect the excited-state H₂^- ion to be
stable? (e) Which of the following statements about part (d) is correct: (i) The light excites an electron from a bonding orbital
to an antibonding orbital, (ii) The light excites an electron
from an antibonding orbital to a bonding orbital, or (iii)
In the excited state there are more bonding electrons than
antibonding electrons?

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