Which is the least reactive, most inert, of all the elements?
Helium
Neon
Cant remember the rest but they dont matter. Those two above are the correct answers and I was told I was wrong when I put helium. they are both part of the 18 group of inert gasses so either one would be correct.Group 18, and they have full valence shells. They are not interested in loaning out or borrowning electrons, and are very stable. The gases helium, neon, argon, krypton, xenon and radon make up the inert gases. They said the correct answer was Neon but Helium is correct also.