How is covalent bond is formed? A. Formation of a single covalent bonds Formation of chlorine molecule, Cl2A chlorine atom has an electron arrangement of 2.8.7. It has seven valence electrons. Each chlorine atom needs one more electron to achieve a stable octet electron arrangement (similar to argon). As a result, two chlorine atoms will combine with each … [Read more...] about How is covalent bond is formed?