Nonmetal
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In the context of the periodic table, a nonmetal is a chemical element that mostly lacks distinctive metallic properties. They range from colorless gases like hydrogen to shiny crystals like iodine. P
While arsenic (here sealed in a container to prevent tarnishing) has a shiny appearance and is a reasonable conductor of heat and electricity, it is soft and brittle and its chemistry is predominately nonmetallic.
Boron in its β-rhombohedral phase
Metallic appearance of carbon as graphite
Blue color of liquid oxygen
The chemical elements can be broadly divided into metals, metalloids, and nonmetals according to their shared physical and chemical properties. All elemental metals have a shiny appearance ; are good
Pure (99.97%+) iron chips, electrolytically refined, accompanied by a high-purity (99.9999% = 6N) 1 cm3 cube
Tellurium, described by Dmitri Mendeleev as forming a transition between metals and nonmetals
25 ml of bromine, a dark red-brown liquid at room temperature