Which of the following is classified as a halide compound?

Sodium chloride is classified as a halide compound because it consists of a metal (sodium) and a halogen (chlorine). Halides are typically ionic compounds formed when a halogen element (such as fluorine, chlorine, bromine, or iodine) reacts with an alkali or alkaline earth metal. In the case of sodium chloride, the sodium ion (Na+) and the chloride ion (Cl-) are held together by ionic bonds, resulting in a stable compound commonly known as table salt. This fundamental structure of halides makes them distinctive, as they often exhibit properties such as high solubility in water and the capability to conduct electricity in solution due to the presence of free ions.