The Liquid Drop Model is a theoretical framework used to describe the structure and behavior of atomic nuclei. It likens the nucleus to a drop of liquid, where nucleons (protons and neutrons) are held together by strong nuclear forces, similar to how molecules in a liquid are held together by intermolecular forces. This model helps explain various nuclear properties, such as binding energy and stability. In this model, the nucleus is characterized by its volume, surface area, and Coulomb repulsion between protons. The semi-empirical mass formula is derived from the Liquid Drop Model, providing a way to calculate the mass and binding energy of nuclei. This approach has been instrumental in understanding nuclear fission and fusion processes.