![]() ![]() In covalent bonds, two elements will share valence electrons until they have a complete shell. One of the primary characteristics of nonmetals is that they form chemical compounds by making covalent and ionic bonds. The noble gases are:ĥ Properties Of Nonmetals 1. As such, noble gases typically do not react with other elements to form compounds. ![]() Noble gases have a full valence shell of 8 electrons so they exist in a very stable electron configuration. ![]() In contrast, the noble gases are characterized by their inert chemical behavior. All halogens have a valence shell of 7 electrons so they are extremely reactive and readily form negative ions. The reactive nonmetals also include the halogens-elements in group 17 of the periodic tables. Others, like oxygen, are a gas at room temperature and are very electronegative. Some, like carbon and sulfur, are solid at room temperature and are less electronegative. Reactive nonmetals tend to show more variation in their physical and chemical properties. Generally, nonmetals are split into two categories: reactive nonmetals and halogens. Polymers such as plastic are covalently bonded chains of molecules that are malleable and can be shaped. Graphite, for example, is a nonmetal compound that is a very good conductor of electricity and is used in electronics equipment. Some nonmetals have all of these properties, some have very few. This list of properties is neither essential nor exhaustive. poor conductors of heat and electricity.High ionization energy and electronegativity.Properties commonly seen in nonmetals are: All nonmetals are located to the right of the periodic table in the p-block of elements (except hydrogen). Most nonmetals tend to be gasses at standard temperatures and pressure and have low densities. This is because nonmetals differ widely in interatomic and intermolecular bonding strengths. Examples of non-metals include carbon, oxygen, nitrogen, and hydrogen all of which are the basic building blocks of organic compounds.Ĭompared to metals, nonmetals display a highly variable range of properties, in terms of their atomic and chemical behavior. Despite making up only 17 of the 118 known elements, nonmetals are some of the most important elements that are essential for life as we know it. In chemistry, the term “nonmetal” refers to elements and compounds that lack a metallic character. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |