This is a bit of a trick question! Noble gases don't have a *fixed* number of electrons.

Here's why:

* Noble gases are in Group 18 of the periodic table. They're known for being very stable and unreactive.

* Their stability comes from having a full outer shell of electrons. This is called an octet (8 electrons) except for Helium, which has a duet (2 electrons).

* The number of electrons in the outer shell varies depending on the specific noble gas. For example:

* Helium (He) has 2 electrons.

* Neon (Ne) has 10 electrons.

* Argon (Ar) has 18 electrons.

* And so on...

So, while they all have a full outer shell, the *total* number of electrons they have differs.