| A | B |
|---|
| bond | force that holds atoms together |
| bond energy | energy required to break a bond |
| covalent bond | electrons shared by two atoms |
| ionic compound | formed by metal and nonmetal |
| polar covalent bond | electrons unequally shared by two atoms |
| electronegativity | ability of an atom to attract shared electrons to itself |
| resonance | more than one valid Lewis structure may be drawn for molecule |
| linear structure | 2 electron pairs (two bonds) on central atom |
| trigonal planar structure | 3 electron pairs (three bonds) on central atom |
| tetrahedral structure | 4 electron pairs (four bonds) on central atom |
| trigonal pyramidal structure | 3 single bonds and a lone pair on central atom |
| bent or v-shaped structure | 2 single bonds and a lone pair on central atom |
