1. Based on its location, which element would you predict has chemical properties most similar to argon (Ar)?
A. Chlorine (CI)
C. Nitrogen (N)
B. Helium (He)
D. Aluminum (Al)

I think the answer is chlorine because it is closest to argon and in the same period

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.