2.5 understand that the noble gases (Group 0) are a family of inert gases and explain their lack of reactivity in terms of their electronic configurations

The Noble Gases

Group 8/0 is called the Noble Gases. This group of gases used to be called the inert gases. Inert means chemically unreactive. These elements do not readily form compounds with other elements. Helium, although sometimes not placed in Group 8, is inert and is therefore a noble gas. The reason for the lack of reactivity is the number of electrons in the outer shell of each atom. Helium and neon atoms have full outer shells, and the rest have 8 electrons in their outer shells. None of the atoms either gains or loses electrons easily.