Rubidium chloride is a chemical compound made up of the elements rubidium and chlorine. It appears as a white or colorless crystalline solid and is highly soluble in water. Rubidium chloride is often used in laboratories and various industrial applications, including the production of rubidium metal and in certain types of glass. This compound has a simple formula, RbCl, indicating that it consists of one rubidium atom and one chlorine atom. It is classified as an alkali metal halide and shares similar properties with other compounds in this group, such as potassium chloride and sodium chloride.