Relate Structure to Chemical Behavior Practice Test

Neon is unreactive because it has 2 valence electrons, so it cannot form bonds with other atoms.

Neon is unreactive because it has 10 total electrons, and elements with more electrons are always less reactive.

Neon is unreactive because it has a low atomic number and low mass compared with other gases.

Neon has a full valence shell (8 valence electrons), so it is already stable and does not tend to gain or lose electrons.