Massachusetts Tests for Educator Licensure (MTEL) Practice Exam: Prep & Study Guide

Covalent bonds form between molecules through the sharing of electrons. In this type of bond, atoms contribute electrons to be shared, allowing each atom to achieve a more stable electron configuration. This sharing allows the atoms to effectively fill their outer electron shells, which is crucial for their stability and the formation of molecules. Unlike ionic bonding, where electrons are completely transferred from one atom to another, covalent bonding involves a mutual sharing that results in a more interconnected structure among the participating atoms. This fundamental characteristic of covalent bonding distinguishes it from other types of bonds and is essential in the formation of a wide variety of compounds in organic chemistry and beyond.