Question

1pt the noble gases include which of the following sets of elements?

○ a. ar, kr

○ b. h, he

○ c. f, cl

○ d. o, s

Explanation:

Noble gases are in Group 18 of the periodic table. Argon (Ar) and Krypton (Kr) are noble gases. Hydrogen (H) is in Group 1, Fluorine (F) and Chlorine (Cl) are in Group 17, and Oxygen (O) and Sulfur (S) are in Group 16.

Answer:

A. Ar, Kr