Which of the following elements is a noble gas?

The noble gases are a group of elements located in the far right column of the periodic table (Group 18). They are known for their inertness or lack of reactivity. Helium is a noble gas. It has a full outer shell of electrons (2 electrons), making it very stable. Other noble gases include neon, argon, krypton, xenon, and radon. Oxygen, nitrogen, and carbon are essential elements for life and are involved in a wide range of chemical reactions, unlike the noble gases.