The noble gases owe their inactivity to

The noble gases are a group of chemical elements in the periodic table, including helium, neon, argon, krypton, xenon, and radon. They are called noble gases because they are very unreactive and rarely participate in chemical reactions. This is due to their electronic configuration, which already has a full outermost shell of electrons (also called an octet configuration). This means they do not need to gain or lose electrons to achieve stability, unlike other elements. Therefore, the noble gases are stable and do not readily react with other elements to form compounds. So, the answer to the question is: Octet configuration.