What is a Covalent Bond?

A covalent bond is a type of chemical bond that occurs when two atoms share electrons in order to achieve a full outer shell. In a covalent bond, the atoms are held together by the attraction between the shared electrons and the positively charged nuclei. This type of bond is common in nonmetal elements and compounds. Covalent bonds are essential for forming molecules, such as water (H₂O) and methane (CH₄). Understanding covalent bonds is crucial in comprehending the behavior and properties of various substances at the molecular level.