Final answer:
Carbon is classified as a nonmetal based on its physical and chemical properties, such as not being able to conduct electricity under normal conditions and lacking a metallic luster.
Step-by-step explanation:
Carbon is a nonmetal. It is located in group 14 of the periodic table and, like other nonmetals, it is characterized by its lack of metallic properties. Carbon cannot conduct electricity under normal conditions and does not have a lustrous appearance; instead, it is known for forming a vast number of compounds, including organic compounds which are fundamental to life.
The classification of elements into metals, nonmetals, and metalloids is based on a set of physical and chemical properties. Metals tend to be lustrous, malleable, ductile, and are good conductors of heat and electricity. Nonmetals, on the other hand, are generally poor conductors of heat and electricity and are not malleable or ductile. Metalloids have properties that are intermediate between those of metals and nonmetals.