None. Xenon is itself an element.
The outer shell of xenon is full with 8 electrons.
There are 8 of them.
8 electrons.
It has 8 electrons. "Your Welcome"
Xe (Xenon) is in group 8, and therefore has a stable configuration of eight valence electrons.
All these elements have six electrons in the outer shell.
they trade and share electrons, depending on how many are in there outer shell.
There are 5, it is in group 5 on the periodic table of the elements
they trade and share electrons, depending on how many are in there outer shell.
The 3rd shell can contain 18 electrons. The elements that have a 3rd shell as the outer shell are the the elements in period 3, where the 3s and 3p orbitals are filled to a maximum of 8 electrons. The 3d orbitals are filled in the 4th period in the transition elements.
Atoms often form ions by losing or gaining enough electrons to end up with a full outer shell. How many electrons are in a full outer shell for most atoms? Don't know? How about Googling full outer shell?
All eight: the shell is full.