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Mean bond energy Definition

The mean bond energy Da-b of a bond A—B in the molecule AB is related by definition to dH/ according to formula (10), and hence dmoi becomes... [Pg.143]

The fact that a Lewis acid is able to accept an electron pair means that it must have either a vacant, low-energy orbital or a polar bond to hydrogen so that it can donate H+ (which has an empty7 Is orbital). Thus, the Lewis definition of acidity includes many species in addition to H+. For example, various metal cations, such as Mg2+, are Lewis acids because they accept a pair of electrons when they form a bond to a base. We ll also see in later chapters that certain metabolic reactions begin with an acid-base reaction between Mg2+ as a Lewis acid and an organic diphosphate or triphosphate ion as the Lewis base. [Pg.57]

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See also in sourсe #XX -- [ Pg.10 ]



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