3. There are six different molecular geometries we are focusing on in Chem 115:

Question

3. There are six different molecular geometries we are focusing on in Chem 115: linear, the tetrahedral group (tetrahedral, bent, trigonal pyramid) and the trigonal planar group (trigonal planar, bent). Arrange these six molecular geometries in order of increasing bond angle, from the molecular geometry expected to have the smallest bond angle, to the molecular geometry expected to have the largest bond angle.

4. Put each group of molecules in order of increasing dipole moment, and explain your sequence citing

evidence collected in Parts C and D.

Group a: CH3Br, CH3I, CH3Cl

Group b: CO2, SO2

Explanation / Answer

3)tetrahedral<trigonalpyramidal <bent( trigonal planar group) < trigonal planar < bent (Td) < linear

4)

a)CH3I <CH3Br < CH3Cl

b)CO2 <SO2

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