The chemical elements most likely to form covalent bonds are those that share electrons, such as carbon, as opposed to those that take them from another element to form an ionic bond. In general, they are nonmetals with similar electronegativities. They are located toward the center of the periodic table, according to HowStuffWorks.Continue Reading
The purest form of a covalent bond exists in diatomic gases. Hydrogen, oxygen, nitrogen and the halogens all form these types of bonds. By sharing an electron they satisfy the octet rule for both atoms. Because the atoms have the same electronegativity, the shared electron has the same attraction to both.
The carbon-hydrogen bond organic materials require a covalent bond. These two elements form long chains that sometimes branch and have functional groups bonded to the chain. Breaking the covalent bond requires energy. In contrast, many ionic compounds readily dissociate when dissolved in water.
In polar covalent bonds, the two atoms continue to share the electron, but due to differences in electronegativity, one atom has more pull for the shared electron than the other. The draw is not strong enough to create an ionic situation. This is the type of bonding observed in water. As a result, water molecules have a positive end and a negative end, making it a polar solvent and giving it the ability to dissolve ionic compounds.Learn more about Atoms & Molecules
Carbon is considered tetravalent because it has four electrons available to form chemical bonds with other elements. These electrons are called valence electrons and are located in the outermost electron shell.Full Answer >
Bromine is a highly reactive element that can form bonds with many different elements, including magnesium, silver, oxygen, chlorine and zinc. Most bromine found in the world is in the form of salts, such as potassium bromide and sodium bromide.Full Answer >
An atom of chromium with no charge has a total of 24 electrons, as indicated by the element's atomic number on the periodic table of elements. The atom also holds 24 protons and 28 neutrons.Full Answer >
To find the number of electrons an element has, locate it on the periodic table of elements, find the atomic number, and note the number of protons; because atoms are naturally electrically neutral, the protons and electrons are usually equal. Look at the oxidation number for further information.Full Answer >