An Atom Has 1 Electron in an Outer Shell That

An atom has 1 electron in an outer shell that holds a maximum of eight electrons. This atom:

A) is most likely an inert gas.
B) will most likely form polar covalent bonds.
C) will most likely gain electrons to achieve stability.
D) will most likely become a negatively charged ion to achieve stability.
E) will most likely lose its outer electron to achieve stability.