Which noble gas has the highest first ionization energy?

Q: Which Noble Gas has the highest First Ionization Energy?
1. Neon
2. Helium
3. Argon
4. Xenon

Answer :
2. “Helium”

Explanation: Helium has the highest First Ionization Energy in the Noble Gases group. Ionization Energy :: Ionization energy is the energy required to remove one mole of electrons from one mole of gaseous atoms. Atoms are more stable when they have full valence shells. Noble Gases have a very stable electron configuration, therefore, they have the highest amount of ionization energy within their periods. It decreases down a family because electrons farther from the nucleus are easier to remove. Ionization Energy levels of Noble Gases group in Descending Order :: He, Ne, Ar, Kr, Xe, Rn