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.
An atom always has the same number of protons as electrons so there are 16 electrons also. The difference between the mass number and atomic number (32 - 16) is the number of neutrons so Sulphur has 16 neutrons also. We can ignore the mass of the electrons. You next question will be about chlorine probably.