An Allegory is used to tell a story that has characters, a setting, as well as other types of symbols, that have both literal and figurative meanings.
Chlorine is counted among this group along with hydrogen (H 2), iodine (I 2), bromine (Br 2), oxygen (O 2), nitrogen (N 2) and fluorine (Fl 2). With seven electrons in its outermost orbit--one electron short of a stable eight-- the element chlorine exists in nature as a diatomic molecule. This arrangement allows two chlorine atoms to share their outermost orbit electrons, achieving stability, compared to the single atom.
The Cl ion. 1  because it has a greater affinity for electrons than the Na atom, the Cl atom takes an electron from the Na atom. 2  When it does so, the outer valence shell of the Chlorine will be filled with eight electrons and so it will be stable. 3  Thus Chloride ions are stable and have a net charge of -1.