How many pi bonds are in the following two molecules,respectively from left to right?
A) 2,1
B) 1,2
C) 2,2
D) 4,3

Question

How many pi bonds are in the following two molecules,respectively from left to right? 
A) 2,1 
B) 1,2 
C) 2,2 
D) 4,3

Quizplus · Accepted Answer

In the first molecule (left to right), there are two pi bonds present. One pi bond is between the carbon atoms in the double bond and the other pi bond is between the carbon and oxygen atoms in the carbonyl group. 
In the second molecule (left to right), there are two pi bonds present as well. One pi bond is between the carbon atoms in the double bond and the other pi bond is between the carbon and nitrogen atoms in the imine group. Therefore, the correct answer is C (2,2).

How Many Pi Bonds Are in the Following Two Molecules,respectively