Final answer:
Antimony has the chemical symbol Sb and reacts with other elements to form various compounds. It can form trihalides, pentahalides, and sulfides depending on the reaction conditions. Antimony is in Group 15 and has a greater metallic nature than arsenic.
Step-by-step explanation:
Antimony has the chemical symbol Sb. It reacts readily with stoichiometric amounts of fluorine, chlorine, bromine, or iodine, yielding trihalides or, with excess fluorine or chlorine, forming the pentahalides SbF5 and SbC15. Depending on the stoichiometry, it forms antimony(III) sulfide, Sb₂S3, or antimony(V) sulfide when heated with sulfur. Antimony is in Group 15 of the periodic table, and its metallic nature is greater than that of arsenic, which lies above it.