7. In each case do the following: i. draw a plausible Lewis structure ii. name the molecular geometry iii. Write the numerical value of each atom's electronegativity close to its symbol (cf. Figure 8.6 of your text) iv. in RED draw bond dipole vector arrows along each bond v. state whether the molecule is polar or nonpolar EXAMPLE: H2O Molecular geometry = angular (bent or v-shaped) a. HF b. CO2 c. CH2Cl2 (carbon is the central atom)