| Electronegativity can be used to predict whether a bond will be a nonpolar covalent bond, a polar covalent bond, or an ionic bond. |
| Thus conjugation can occur in molecules in which the unsaturated sites are close in space but are separated by more than a single covalent bond. |
| The particles have functional sites for forming a hydrogen bond or a coordinate covalent bond. |
| The three shared pairs of electrons between the two carbon atoms create a triple covalent bond. |
| In this case a covalent bond has an ionic component and is generally called a polar bond. |
| These rules are the result of assigning all electrons in a covalent bond to the more electronegative atom in the bond. |
