Which of the following statements is true about a covalent bond?

A covalent bond is characterized by the sharing of electrons between atoms. This type of bond often occurs between nonmetals, which have similar electronegativities. By sharing electrons, atoms can achieve a more stable electron configuration, typically allowing each atom to fill its outer electron shell. This shared electron arrangement leads to the formation of molecules where the bonded atoms are held together by the mutual attraction of their positively charged nuclei to the shared electrons.

In contrast, a covalent bond does not involve the transfer of electrons; that would describe ionic bonding, where one atom donates an electron to another. Covalent bonds can be found in both organic and inorganic molecules, not limited to just organic substances. Additionally, covalent bonds can easily form complex substances that consist of multiple elements, such as water (H₂O) or glucose (C₆H₁₂O₆), demonstrating the versatility of covalent bonding in chemistry.