Considering the definition of covalent bond, covalent bonds are established between non-metallic elements
The covalent bond is the chemical bond between atoms where electrons are shared, forming a molecule.
Covalent bonds are established between non-metallic elements. These elements have many electrons in their outermost level (valence electrons) and have a tendency to gain electrons to acquire the stability of the electronic structure of noble gas. The shared electron pair is common to the two atoms and holds them together.
On the other side, the octet rule defines the property that atoms have of completing their last energy level with eight electrons to achieve stability, based on the fact that noble gases that have 8 electrons in their last shell and are the least reactive elements, and thus more stable. , from the periodic table.
So by covalent bonding, the atoms will share electrons to complete 8 electrons in the valence shell and satisfy the octet rule.
In summary, covalent bonds are established between non-metallic elements
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