Nonmetals have many properties that are completely different from the properties of metals, including:
- It has a low boiling point and melting point.
- poor thermal conductivity.
- Weak electrical conductivity.
- It has a very high ionization energy that helps it attract electrons to it.
- It has a very little metallic luster that is almost non-existent.
- Solid nonmetals are too brittle to be shaped and shaped.
- They combine with oxygen to form acidic oxides.
They are non-metallic chemical elements, which are not found in abundance in nature such as metals, but they are very necessary for the growth of living organisms, most of the non-metals have small atoms, and contain a large number of electrons revolving around their nuclei.The nonmetals are found in the periodic table in the right hand side from the top in the form of a triangle, and they include the noble gases, halogens, and eight elements called the orphan that include the elements carbon and hydrogen, and are very necessary for life, as nonmetals such as hydrogen and oxygen constitute approximately 99% of the mass of the universe surrounding us .
Among the most important nonmetals are the following chemical elements:
The Six Orphan Elements
- Boron has atomic number 5.
- Nitrogen has atomic number 7.
- The element oxygen has atomic number 8.
- Phosphorous is the element with atomic number 15.
- The element sulfur has atomic number 16.
- Selenium is the element with atomic number 34.
The noble gases are called so because of their lack of tendency to interact and bond with other elements, as they exist in nature in the form of individual atoms, not molecules. They are also called inert elements, namely:
- Helium (He).
- Neon (Ne).
- argon (Ar).
- Krypton (Kr).
- Xenon (Xe).
- Radon (Rn).
Halogens occupy the seventh group in the periodic table of the elements, and they are the most diverse groups in the state of their elements.
- Fluorine (F).
- Chlorine (Cl).
- Bromine (Br).
- Iodine (I).
- Astatine (At).
- ↑ Anne Marie Helmenstine, Ph.D. (20-4-2018), “The Definition and Properties of Nonmetals”, www.thoughtco.com, Retrieved 4-9-2018. Edited.
- ↑ “Nonmetal”, www.britannica.com, Retrieved 4-9-2018. Edited.
- ^ a b c “NONMETALS”, www.encyclopedia.com, Retrieved 9-4-2018. Edited.
properties of nonmetals