The Fermi Gas Model is a theoretical framework used to describe a collection of non-interacting fermions, which are particles that follow the Pauli exclusion principle. This principle states that no two fermions can occupy the same quantum state simultaneously. The model is particularly useful in understanding the behavior of electrons in metals and other systems at low temperatures, where quantum effects become significant. In the Fermi Gas Model, the fermions are treated as a gas of particles that fill available energy states up to a maximum energy level known as the Fermi Energy. This model helps explain various physical properties of materials, such as electrical conductivity and heat capacity, and is foundational in the study of condensed matter physics and the behavior of systems like metals and semiconductors.