The Lewis structure for SiS2 consists of a central silicon atom double-bonded to two sulfur atoms, fulfilling the octet rule for each atom.
Step-by-step explanation:
The Lewis structure for SiS2 (silicon disulfide) can be drawn by recognizing that silicon (Si) has four valence electrons and each sulfur (S) atom has six valence electrons. Silicon will be the central atom, with each sulfur atom forming a double bond with the silicon. As a result, both sulfur atoms will satisfy the octet rule, and silicon will have a full valence shell. The Lewis electron dot diagram for SiS2 will show a silicon atom in the middle with two double bonds extending to the sulfur atoms on each side.