Common examples of diatomic molecules from Group 7A elements include
A) fluorine, hydrogen, and nitrogen.
B) nitrogen, chlorine, and bromine.
C) chlorine, bromine, and iodine.
D) iodine, lead, and oxygen.

Question

Quizplus · Accepted Answer

Group 7A elements are known as halogens and they exist as diatomic molecules in their elemental form. The diatomic molecules from Group 7A elements include chlorine (Cl2), bromine (Br2), and iodine (I2). Therefore, the best choice is option C. Fluorine is also a halogen, but it exists as a monatomic gas under normal conditions. Hydrogen and nitrogen are not in Group 7A. Lead is not a halogen or a diatomic molecule. Oxygen is in Group 6A and exists as a diatomic molecule, but it is not in Group 7A.

Common Examples of Diatomic Molecules from Group 7A Elements Include