Question: what are the major differences in the physical properties of metals nonmetals and metalloids?
Answer: Key Differences Between Metals, Non-Metals, and Metalloids Metals have a shiny appearance, and nonmetals have a dull appearance; however, metalloids have a shiny and dull appearance. Thermal and electrical conductivity is high in metals, low in nonmetals, and it is good though is less than metals in metalloids.