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sciencenotes.org/list-nonmetals

The nonmetal elements occupy the upper right-hand corner of the periodic table. These elements have similar chemical properties that differ from the elements considered metals. The nonmetal element group is a subset of these elements. The nonmetal element group consists of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur and selenium.

www.chemicalelements.com/groups/nonmetals.html

Non-metals are not able to conduct electricity or heat very well. As opposed to metals, non-metallic elements are very brittle, and cannot be rolled into wires or pounded into sheets. The non-metals exist in two of the three states of matter at room temperature: gases (such as oxygen) and solids (such as carbon).

www.thoughtco.com/nonmetals-list-element-groups-606658

Even though there are only 7 elements within the nonmetals group, two of these elements (hydrogen and helium) make up over 99 percent of the mass of the universe. Nonmetals form more compounds than metals. Living organisms consist mainly of nonmetals (carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus in organic compounds).

en.wikipedia.org/wiki/Nonmetal

In chemistry, a nonmetal (or non-metal) is a chemical element that mostly lacks the characteristics of a metal.Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density.A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity.Chemically, nonmetals tend to have relatively high ionization energy ...

www.dummies.com/.../chemistry/the-periodic-table-metals-nonmetals-and-metalloids

Using the periodic table, you can classify the elements in many ways. One useful way is by metals, nonmetals, and metalloids. (See also The Periodic Table: Families and Periods.) Most of the elements on the periodic table are classified as metals. Metals In the periodic table, you can see a stair-stepped line starting at Boron […]

sciencetrends.com/complete-list-metals-non-metals

When we study the elements, it is important to know which elements are metals and which ones are not. If you are trying to learn to distinguish between metals and non-metals, a list and their uses is a good way to break them down and help memorize the difference between the two.

en.wikipedia.org/wiki/Properties_of_metals,_metalloids_and_nonmetals

The chemical elements can be broadly divided into metals, metalloids and nonmetals according to their shared physical and chemical properties.All metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metals; and have at least one basic oxide.Metalloids are metallic-looking brittle solids that are either ...

www.angelo.edu/faculty/kboudrea/periodic/physical_metals.htm

The elements can be classified as metals, nonmetals, or metalloids.Metals are good conductors of heat and electricity, and are malleable (they can be hammered into sheets) and ductile (they can be drawn into wire).Most of the metals are solids at room temperature, with a characteristic silvery shine (except for mercury, which is a liquid).

www.utc.edu/faculty/tom-rybolt/pdfs/elements-nonmetals2014.pdf

Nonmetals 2 Boron B Of group 13 elements only Boron is a nonmetal Boron B3+ - never formed because it requires too much energy to remove the three electrons and energy cannot be supplied by the lattice energy Boron does not occur free in nature but found in a variety of different ores

www.thoughtco.com/nonmetals-definition-and-properties-606659

A nonmetal is simply an element that does not display the properties of a metal. It is not defined by what it is, but by what it is not. It doesn't look metallic, can't be made into a wire, pounded into shape or bent, doesn't conduct heat or electricity well, and doesn't have a high melting or boiling point.