To identify the group of elements that are all gases at room temperature, we need to refer to the periodic table. In general, the majority of gases at room temperature are found in the nonmetal section of the periodic table. Specifically, the elements belonging to Group 18 (VIII A) are commonly known as the noble gases and are all gases at room temperature. This group includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). These elements have completely filled electron shells, making them generally unreactive and stable in their gaseous states.
