Molecular Orbitals and Period 2 Diatomic

Chapter , Problem 71E

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Problem 71E

Molecular Orbitals and Period 2 Diatomic Molecules (Sections)

Consider the H2 + ion. (a) Sketch the molecular orbitals of the ion and draw its energy-level diagram., (b) How many electrons are there in the H2 + ion? (c) Write the electron configuration of the ion in terms of its MOs., (d) What is the bond order in H2 +? (e) Suppose that the ion is excited by light so that an electron moves from a lower-energy to a higherenergy MO. Would you expect the excited-state H2 + ion to be stable or to fall apart? (f) Which of the following statements about part (e) 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?