| In both cases, the ammonia molecule is acting as a Lewis base, donating the pair of electrons required to form the coordinate covalent bond. |
| In chemistry, a polar bond is a type of covalent bond between two atoms or more in which electrons are shared unequally. |
| A polar bond can be thought of as intermediate between a covalent bond and an ionic bond. |
| The three shared pairs of electrons between the two carbon atoms create a triple covalent bond. |
| In a coordinate covalent bond, both electrons are donated by the Logan, a Lewis base, to the metal atom, a Lewis acid. |
| Electronegativity can be used to predict whether a bond will be a nonpolar covalent bond, a polar covalent bond, or an ionic bond. |
