For each of the compounds below, A В , and C state whether the molecule is polar or nonpolar. A o=C=o HO, Br H Br

Consider a molecule with the following Lewis structure: What is the approximate O-A-O angle (denoted 0)? O 0 = 180° O 120° 00

Effect of Differences in Electronegativity on Molecular Polarity For each molecule: Sketch each molecule as shown in the simulation. Include arrows to show the bond dipoles as well as a molecular dipole (if present). Circle polar or nonpolar to indicate the polarity of the molecule. Fill in the electronegativity values for each atom C. Oz vs HF O2 HF polar Electronegativity nonpolar polar nonpolar H=D F = Question 2a: Both of these molecules have the same molecular geometry; they are linear. How do differences in electronegativity affect the molecular polarity in linear molecules? Page 8 of 9 CHM CZ1 ONL Genmetru chrt p-ts voih 1032 Corvrinht e 2020-2021 B CSI A

Which of the following is nonpolar? O NO2 SO3 PH3 HCN CHCI3

C5H12  What is the electron geometry around each C? Does the geometry around any of the carbon atoms change from structure to structure? Does the overall shape of the molecule change? Describe these changes.

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. name compound hypochlorous acid hydrogen fluoride methanimine formula or Lewis structure HCIO HF H 1 H-C=N-H Between molecules of the compound? O yes O no O yes O no hydrogen-bonding force O yes O no Between molecules of the compound and molecules of water? O yes O no O yes Ono O yes O no X G

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. name methane formic acid compound hydrogen fluoride formula or Lewis structure CHA :0: 11 H-C-O-H HF Between molecules of the compound? O yes O no O yes O no hydrogen-bonding force O yes O no Between molecules of the compound and molecules of water? O yes O no yes O no O yes O no X G

Identify the molecular shape of each of the molecules. Molecule SiHA SFA LL F F-C-F |||| Geometry Molecule BrF5 PCI, Geometry