Atomic Structure Fundamentals: Particles, Models, and Electron Configuration

Every aspect of chemistry and physics begins with understanding the atom. Without a clear model of atomic structure, advanced topics remain confusing and inaccessible. This course provides a solid conceptual foundation, ensuring you can confidently analyze the components of matter and predict basic chemical behavior. By the end of this course, you will have a working knowledge of the modern atomic model, the properties of subatomic particles, and the rules governing electron placement, preparing you for further study in science. What you'll learn: * Understand the historical evolution of atomic theory, from Dalton’s postulates to the Bohr model. * Identify and describe the mass, charge, and location of protons, neutrons, and electrons. * Apply rules for calculating atomic number, mass number, isotopes, and isobars. * Configure electron distribution in shells using established rules and determine valence electrons. * Analyze how valence electrons determine an element's chemical reactivity and ability to form ions. * Conceptualize the differences between the simple shell model and modern atomic orbitals (s, p, d). The course begins by reviewing foundational terminology and historical models, then systematically introduces the three main subatomic particles. You will then practice applying electron configuration rules and explore how these configurations relate to basic chemical properties. This course is designed for absolute beginners in chemistry or physics. No prior scientific knowledge is required to enroll. Start your journey into the fundamental nature of matter today.