1. Draw the correct Lewis dot structure for CN^-. How many electrons are there between C and N? a) 2 b) 3 c) 4 d) 5 *e) 6

 2. Write down all the isomers you can for the empirical formula C₄H₈

There are 6 acceptable isomers. 

3. Write down the structure implied by the name 1,1 dimethyl 2-butene. What should the correct name of this compound be? (4 methyl 2 pentene)

4. The angle characteristic of the maximum separation of 4 sets of electrons is a) 90^o b) 109^o

c) 120^o d) 180^o e) 360^o

5. What is the hybridization and geometry around each C atom in propene? propyne?

6. Draw the correct Lewis structure of HCN. How many pi and sigma bonds are present in the molecule HCN? (answer 2 pi and 2 sigma)

7. Write down all the possible structures corresponding to the empirical formula: C₃H₄

There are 3 acceptable isomers. 

8. Which of the following substance would have the highest boiling point?

a) N₂ b) KBr c) SF₆ d) H₂O d) CCl₄

Which of the following substance would have the lowest boiling point?

a) N₂ b) KBr c) SF₆ d) H₂O d) CCl₄