Question

reference your periodic table to help you answer the following question.

1. which of the following elements would you expect to have chemical properties similar to fluorine (f)?

a. argon (ar), because they are both noble gasses.
b. beryllium, (be) because they are in the same period.
c. chlorine (cl), because they are found in the same group.
d. neon (ne), because they have almost the same number of protons.

Explanation:

• Option a: Argon is a noble gas, while Fluorine is a halogen. Noble gases and halogens have different chemical properties.
• Option b: Beryllium and Fluorine are in the same period. Elements in the same period have different chemical properties as they have different valence electron configurations.
• Option c: Chlorine and Fluorine are in the same group (Group 17 - halogens). Elements in the same group have similar valence electron configurations, which leads to similar chemical properties.
• Option d: Neon is a noble gas. Fluorine and Neon have different chemical properties. Also, the number of protons (atomic number) is different for Fluorine ($Z = 9$) and Neon ($Z=10$).

Answer:

C. Chlorine (Cl), because they are found in the same group.