Chlorine doesn't actually "accept" only one electron. It can accept one electron to become a chloride ion (Cl-), but it can also share electrons to form covalent bonds with other atoms.

Here's a breakdown:

* Electronic Configuration: Chlorine has 7 valence electrons (electrons in its outermost shell). It needs one more electron to achieve a stable octet configuration like the noble gases.

* Gaining an Electron: When chlorine gains one electron, it becomes a chloride ion (Cl-), which is negatively charged. This fulfills the octet rule and makes it more stable.

* Sharing Electrons: Chlorine can also share electrons with other atoms to form covalent bonds. This allows both atoms to achieve a stable octet configuration. For example, in the molecule HCl (hydrogen chloride), chlorine shares one electron with hydrogen.

Therefore, while chlorine can accept one electron to become a chloride ion, it's not limited to this single electron "acceptance." It can also share electrons to form covalent bonds.