Considering the definition of octect rule bond covalent, when hydrogen shares electrons with oxygen, the outermost shell of the hydrogen atoms are full with 2 electrons and oxygen’s valence shell is full with 8 electrons. Because the valence shells of these atoms are full, the atoms are stable.
The octet rule defines the property that atoms have of completing their last energy level with eight electrons, acquiring a stable configuration very similar to that of a noble gas.
Whether it is an ionic, covalent or metallic bond, the atoms will tend to give up or share to complete 8 electrons in the valence shell.
On the other hand, 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 a tendency to gain electrons to acquire the stability of the electronic structure of noble gas, complying with the octet rule.
Then, the union between the hydrogen and oxygen will be covalent.
Hydrogen, having a single orbital in its valence shell that can accept a maximum of two electrons, is an exception to the octet rule, while oxygen complies with the octet rule by completing 8 electrons at its last level.
Finally, when hydrogen shares electrons with oxygen, the outermost shell of the hydrogen atoms are full with 2 electrons and oxygen’s valence shell is full with 8 electrons. Because the valence shells of these atoms are full, the atoms are stable.
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