How are neon argon krypton and xenon similar to helium?

Answer 1

All are examples of noble gases and they are generally non-reactive under normal temperature and pressure. All have stable electronic configuration, helium has only 2 valence electrons whereas other noble gases have 8 valence electrons (satisfy octet rule).

Answer 2

Neon, argon, krypton, and xenon are all noble gases like helium, meaning they are all colorless, odorless, and have low chemical reactivity. These gases are all found in the atmosphere in small amounts and have full outer electron shells, making them stable and unreactive under normal conditions.