1.What are the dominant energy terms that are responsible for cesium fluoride occurring as an ionic solid and hydrogen fluoride occurring as    a diatomic gas at standard conditions? 2.Explain why the energy separation between the t2g and eg  d molecular orbitals in  Mo(OCH3)6   is smaller than the value for Mo(CO)6   even though  the average Mo-OCH3 bond dissociation enthalpy is more than  twice the    M-CO

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