electron affinity

[Paloma Sanchez 3L]

Why is adding an electron to a noble gas unfavorable?

[Anthony Tam]

Adding or removing an electron to a noble gas is unfavorable because noble gases already have stable, filled shell configurations. An element is most stable when its outer valence shell is filled. By adding or removing an electron from a noble gas, it is making it unstable (thus less favorable).

[Kaitlyn Bateman 1L]

The noble gases have all of their shells/subshells and orbitals filled, so it is unfavorable to add an electron or take one away because it is already stable.

[Desiree Eshraghi 3A]

When talking periodic trends, electron affinity increases to the upper right corner ASIDE from the noble gases. Since they already have a complete shell there is no "reason" for them to want an additional electron. Atoms was filled shells, they either like to remove an electron or add an electron do it while noble gases are not in that position.

[EriMizuguchi2K]

Since noble gases have full octets, it's unfavorable to remove or add one election because noble gases are already stable

[Nicole Ton 3C]

Atoms are most stable when their valence electrons are a full octet, which is 8 electrons. Noble gases already have 8 valence electrons and this full octet, so they are stable as in. Thus, it is unfavorable to add an electron to a noble gas since it would make the atom less stable.

[Shawn Suen]

Noble gases have filled valence shells so they are already in the most stable state they can be in, to add in an electron would disrupt the stable state, so it takes a lot of energy to add in or take out an electron from a noble gas.

[Neeti Indiresan 3I]

Noble gases are very stable because they have full valence shells - meaning they have 8 valence electrons. If they were to gain an electron, they would no longer have a full octect, making them less stable.