Explore the fundamental concepts of atomic structure and the periodic table in this comprehensive Grade 11 Chemistry course. Delve into electromagnetic radiation, examine the limitations of the Bohr Model, and gain insights into the quantum mechanical model of the atom. Investigate key atomic properties such as atomic radius, ionization energy, and electron affinity while understanding their relationship to the periodic table. Designed for Ethiopian Grade 11 students, this 4.5-hour course provides a thorough foundation in essential chemistry topics, preparing learners for advanced studies in the field.