For the compound NaCl, what type of bond would join the elements and why? HINT: If a metal and nonmetal bond it's an ionic bond. If two or more nonmetals bond and share electrons, then it's covalent. Use the periodic table if necessary. covalent because an electron is transferred from a Na atom to a Cl atom. covalent because electrons are shared between the Na and Cl atoms ionic because an electron is transferred from a Na atom to a Cl atom. ionic because electrons are shared between the Na and Cl atoms