Nonmetals tend to have lower melting and boiling points than metals. They tend to be dull and brittle. They do not conduct heat or electricity. They are insulators.
nonmetal
No, it does not.
element that is not metal
NONMETAL
synthetic
Helium is a nonmetal. It has properties that classify it as a noble gas, which is a group of nonmetals that are generally unreactive.
-nonmalleable -brittle -insulator -nonductile
See the definition of a metal and properties of chlorine.
Graphite is carbon. Carbon is ordinarily classified as a nonmetal but has some metallic properties and is occasionally classified as a metalloid.
Germanium is a metalloid, which is an element that shares properties of both metals and nonmetals. It has characteristics of both categories, such as being a semiconductor like a nonmetal but also having metallic luster.
Nitrogen is a nonmetal. It is found in group 15 of the periodic table and typically exhibits nonmetallic properties such as being a poor conductor of heat and electricity.
The nonmetal in period three with properties similar to iodine is chlorine. Chlorine is in the same group (halogens) as iodine and shares similar chemical properties such as being highly reactive and forming compounds easily.