In this video lesson, we delved into the fundamental building blocks of matter, exploring atomic structure and chemical bonding.

Learning Objectives:
By the end of this video lesson, the learners should be able to:
1. define and explain the particulate nature of matters,
2. describe atomic structure and electronic configuration,
3. define atomic number, mass number, and isotopy,
4. state the atomicity of some elements,
5. describe the works of Dalton, Millikan, Rutherford, Moseley, Thomson and Bohr
6. calculate the relative atomic masses of elements,
7. explain the Quantum numbers,
8. state and explain the Pauli's exclusion principle, Hund's rule and Aufbau principle,
9. describe the shapes of the s and p orbital.