Levitation of two-dimensional (2D) ordered arrays of microdroplets over hot liquid surfaces has been studied in several previous papers. This phenomenon is relevant for many practical applications, such as spray cooling or synthesis of chemical components by containerless process. However, the mechanism of interaction of drops with each other in the 2D array has not yet been clarified. In this connection, the aim of this work is to determine the dependence of the distance between microdroplets on their size and on the number of drops in the array. It was found that the average distance between the drops grows with increasing diameter of the drops. According to the results of the experiment, for the number of droplets N less than about 7, the average distance between the drops practically does not change, however for N>7 the distance between the drops starts to decrease with N.