Which statement correctly describes the relationship between element 17 (Cl) and element 9 (F) on the periodic table?

• A. Cl and F are both alkali metals.
• B. Cl is a noble gas, while F is a halogen.
• C. Cl and F are transition metals.
• D. Both Cl and F are halogens in Group 17.

Answer: (D)

Verified step by step guidance

1. Identify the atomic numbers of the elements: element 17 is chlorine (Cl) and element 9 is fluorine (F).
2. Recall the periodic table groups: Group 17 is known as the halogens, which are nonmetals with similar chemical properties.
3. Check the group placement of Cl and F: both chlorine (Cl) and fluorine (F) are located in Group 17 of the periodic table.
4. Understand the properties of halogens: elements in Group 17 are reactive nonmetals, not alkali metals, noble gases, or transition metals.
5. Conclude that both Cl and F are halogens in Group 17, sharing similar chemical characteristics.