What is the total number of shared pair of electrons in the compound above?
A.
5
B.
8
C.
10
D.
12
Correct answer is D
Each double bond has two pairs of valence electrons shared to form a covalent bonding. Also, every C-H bond, has 2 valence elctrons involved. Drawing the Lewis structure, you see that the above compound has 12 valence electrons shared.