Answer:The quantum mechanical model describes the behavior of electrons in antimony, not by giving exact locations, but by providing probabilities of finding them in certain regions around the nucleus. This model uses the Schrödinger equation to determine specific energy levels, which are quantized. The solutions to this equation, called wave functions, represent the probability of finding an electron in a particular area. The electron cloud, a visual representation of these probabilities, is further divided into orbitals, each with a specific energy level and shape. This model also helps predict the electron configuration of antimony, indicating which orbitals are occupied by electrons and their numbers.