NAME: September 19, 2008
OVER
Chemistry 231 – Elementary Organic Chemistry
In-Class Quiz -- #1
1. (4 pts. total; 2 pts. each) For each of the following questions, circle the BEST
answer.
a. Strongest carbon-carbon bond
CH
3
CH
3
CH
2
CH
2
O
2
C
2
H
2
CO
2
b. Narrowest (smallest) ∠H-Y-H bond angle
CH
4
BH
3
BeH
2
H
2
O
NH
3
2. (3 pts) Nitrous oxide is a second-row triiatomic molecule composed of nitrogen and
oxygen, commonly known as “laughing gas.” It has both an empirical and molecular
formula of N
2
O. In the space provided below, draw the most stable Lewis electron
dot structure for N
2
O. Be certain to indicate formal charges, if any.
Place your answer here
N N
+
O
::
.
.
.
.
