👉 In chemistry, a halide is a molecule that consists of an atom with a noble gas (like neon, argon, or xenon) as its nucleus and a hydrogen atom as its electron. Halides are also known as halogenated compounds because their structure includes one or more hydrogen atoms. One example of a halide compound is sodium fluoride, which contains two fluorine atoms in the molecule. Another common example is sodium iodide, which contains two iodine atoms in the molecule.