1-) Which compound has the longest carbon-carbon bond length?
A) CH2CH2
B) HCCH
C) CH3CH3
D) All bond lengths are the same
2-) Place the following in order of decreasing XO bond length, where "X" represents the central atom in each of the following compounds or ions:
SiO2-, CO2, CO3^2-
3-) Choose the bond below that is most polar.
C-C, F-F, C-N, C-O, C-F
4-) Draw the best Lewis structure for CH3-. What is the formal charge on the C?