Respuesta :
NaCl, sodium chloride is an example of a covalent bond because ions are shared.
The bond formed by the sharing of electrons between the two non-metal atoms are known as covalent bonds. The sharing of electrons results in formation of stable molecule and each atom in the molecule complete its octet (eight electrons in the outer most shell exception is hydrogen (having 2 electrons)). So, in order to attain stability atoms share electrons.
Hydrogen on sharing its one electron with chlorine results in formation of hydrogen chloride molecule and chlorine and hydrogen complete its octet by sharing one electron of each and thus forming a single covalent bond by sharing of two electrons.
Thus, Hydrogen is the element that forms covalent bond with chlorine.
