According to octet rule, there is a tendency of the atoms to lose, share or gain electrons in order to complete their octet, the octet is the presence of 8 electron in the outermost shell. The sulphur has 6 valance electrons in its outer shell. The chlorine has 7 valance electrons in its outer shell. To complete the octet, the one chlorine atom shares 1 electron pair with the sulphur in SCl2.
