Answer :
Final answer:
Chlorine is a nonmetal, Cobalt is a metal, and Sulfur is a nonmetal, corresponding to the classification option b) Nonmetal - Metal - Nonmetal.
Explanation:
To classify the given elements extendash Chlorine, Cobalt, and Sulfur extendash as metals, nonmetals, or metalloids, one must examine their positions on the periodic table. Chlorine (Cl) is a nonmetal, found in the halogen group on the right side of the periodic table. Cobalt (Co) is classified as a metal, specifically a transition metal, located in the middle portion of the periodic table. Lastly, Sulfur (S) is also a nonmetal, found in the chalcogen group, adjacent to the halogen group where Chlorine is found. Therefore, the correct classification of these elements would be Chlorine as a nonmetal, Cobalt as a metal, and Sulfur as a nonmetal, which corresponds to Nonmetal - Metal - Nonmetal.
