Question

23 multiple answer 4 points select all of the following that are noble gases. rb sr br cl ca na he ne f k ar kr xe mg

Explanation:

Noble gases are in Group 18 of the periodic table. They are chemically inert due to having full - valence electron shells. He (helium), Ne (neon), Ar (argon), Kr (krypton), and Xe (xenon) are noble gases. The other elements listed are from different groups and are not noble gases.

Answer:

He. Helium, Ne. Neon, Ar. Argon, Kr. Krypton, Xe. Xenon