上游充通大￥ SHANGHAI JIAO TONG UNIVERSITY Approximate Calculation of Solid Surface Energy(1) The binding energy of an atom to a solid is the result of discrete bonds to its nearest neighbors,then the energy of one bond,s,can be written as follows: △Hs S= 0.5ZNA AHs The molar enthalpy of sublimation (breaking all the bonds) Z The coordination number N,Avogadro's number There are 0.5ZNA bonds per moleApproximate Calculation of Solid Surface Energy (1)