OSMT (Ontario Society of Medical Technologists) Practice Exam

Iodine is classified as a:

1. Phenolic

2. Halogen

3. Heavy metal

4. Aldehyde

The correct answer is: Halogen

Iodine is classified as a halogen because it belongs to Group 17 of the periodic table, which includes other halogens such as fluorine, chlorine, bromine, and astatine. Halogens are characterized by their high reactivity and the ability to form salts when they react with metals. Iodine specifically is known for its role in various applications, including its use as a disinfectant and antiseptic, due to its effective antimicrobial properties linked to its high reactivity. Understanding iodine's classification as a halogen also highlights its chemical behavior, as halogens typically exist as diatomic molecules (e.g., I2) in their elemental state and readily engage in reactions that can incorporate them into various compounds. This distinction is crucial in fields like medical technology, where the proper categorization of substances informs their use and handling protocols in laboratory settings.