# How do you explain the reactivity of the noble gases in terms of valence electrons?

Nov 9, 2015

#### Answer:

All of the Noble gases have complete valence shells. I know I am not telling you anything new.

#### Explanation:

Given a full valence shell, Noble gases, are (i) hard to oxidize, and (ii) hard to reduce. The Noble gases should therefore have a quite limited chemistry, as indeed they do. Nevertheless, even for $H e$, some reaction chemistry is known; i.e. $H {e}_{2}^{+}$ is not something you'll be able to put in a bottle, but it is known spectroscopically.