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We predict general trends for surface segregation in a binary metal clusterbased on the difference between the atomic properties of the constituentelements. Considering the attractive and repulsive contributions of thecohesive energy of an atom in a cluster, energetically most favorable sites fora guest atom on a pure metal cluster is determined. It is predicted that foradjacent elements in a row of the periodic table, the bimetallic system wouldbe more stable if the component with smallest valence electron density isplaced on the surface. On the contrary, for well separated components in theperiodic table, the bimetallic cluster would be more stable if the componentwith the smallest core electron density is placed inside. Such chemical {\bfordering trends} in the lowest energy configurations of Pt-Au, Pt-Pd and Pt-Nibinary alloy clusters are verified for their 561 atom systems through simulatedannealing process. It is predicted that the Ir, Rh, Ni, Pd atoms would tend tobe located inside the Ir-Pt, Rh-Pd, Ni-Cu and Pd-Ag bimetallic nanoclusters,respectively.

General segregation and chemical ordering in bimetallic nanoclusters through atomistic view points