Which of the following is NOT a halogenated agent?

Water is not a halogenated agent. Halogenated agents are compounds that contain halogens, which are elements found in Group 17 of the periodic table, including fluorine, chlorine, bromine, and iodine. These agents are commonly used in fire suppression systems due to their effectiveness in extinguishing fires without leaving residue and being safe for sensitive equipment.

In contrast, water is a simple compound consisting of hydrogen and oxygen, lacking any halogen elements. This makes it fundamentally different from halogenated agents, which have specific chemical properties that delineate their effectiveness in firefighting scenarios.

Halon 1301 and PFCs (Perfluorocarbons) both contain halogens, making them effective fire suppression agents. HCFC (Hydrochlorofluorocarbons) also contains halogen elements, specifically chlorine and fluorine. These compounds work by interrupting the chemical reactions involved in combustion, making them viable options for certain types of fires.