In a covalent bond, electrons are shared between two or more atoms, unlike in an ionic bond, where electrons are transferred. The shared electrons are held in a region between the nuclei called a molecular orbital. The electrons in a covalent bond are attracted to the nuclei of both atoms, which holds the atoms together. Covalent bonds are typically stronger than ionic bonds because the electrons are held more strongly between the atoms. Covalent bonding is commonly found in organic compounds and molecules such as water (H2O), carbon dioxide (CO2), and methane (CH4).