The capital “S” is encircled by eight dots and a “2-” superscript to denote the ion’s charge in order to show the Lewis structure of S2-. The number of valence electrons in the ion’s outermost shell is indicated by the dots.
A Lewis structure, also known as a Lewis electron dot diagram, is a visual representation of all the valence electrons present in an atom. The atom’s ability to form chemical bonds is controlled by these electrons.
The average number of valence electrons for a neutral sulphur atom, which is six, is augmented by two for a total of eight electrons for negatively charged atoms, such as the sulphide ion S2-.
The eight dots that represent the valence electrons in the Lewis structure for the sulphide ion are typically grouped into pairs of two dots on the left, right, top, and bottom sides of the chemical symbol for sulphur.