How does the current model of atom differ from j.j. Thompsons model?

J.J. Thompson's model of the atom, known as the "plum pudding model," proposed that atoms were composed of a diffuse cloud of positive charge with negatively charged electrons embedded like "plums" in a pudding. In contrast, the current atomic model, based on quantum mechanics, describes the atom as having a dense nucleus containing protons and neutrons, with electrons existing in probabilistic orbitals around the nucleus rather than fixed paths. This modern model accounts for the wave-particle duality of electrons and incorporates principles of quantum theory, providing a more accurate representation of atomic structure.