Final answer:
Noble gases are the group of elements that already have a complete set of valence electrons, satisfying the octet rule without the need to form compounds.
Step-by-step explanation:
The group of elements that satisfies the octet rule without forming compounds is the noble gases. Noble gases, such as helium, neon, argon, krypton, xenon, and radon, already have a complete set of valence electrons (an octet), which makes them chemically inert or non-reactive under normal conditions. This means that they do not need to form compounds in order to achieve a stable electronic configuration. The octet rule is a chemical rule of thumb that reflects the observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.