For the following elements, classify each as either atomic or molecular.
a. Chlorine
b. Helium
c. Nitrogen
d. Potassium

• A. Chlorine = atomic; Helium = atomic; Nitrogen = molecular; Potassium = atomic
• B. Chlorine = molecular; Helium = atomic; Nitrogen = molecular; Potassium = atomic
• C. Chlorine = molecular; Helium = molecular; Nitrogen = molecular; Potassium = atomic
• D. Chlorine = molecular; Helium = atomic; Nitrogen = molecular; Potassium = molecular

Answer: (B)