The carbon-carbon bonding of cyclobutane is shown below.How many hydrogen atoms are needed to complete the structural formula of cyclobutane?
A) 6
B) 8
C) 10
D) 12
E) 14

Question

The carbon-carbon bonding of cyclobutane is shown below.How many hydrogen atoms are needed to complete the structural formula of cyclobutane? 
A) 6 
B) 8 
C) 10 
D) 12 
E) 14

Quizplus · Accepted Answer

Each carbon atom in cyclobutane forms two covalent bonds with neighboring carbon atoms, so there are four carbon atoms and eight carbon-carbon bonds. Each carbon atom also needs to form two additional covalent bonds with hydrogen atoms to achieve a stable configuration, therefore there are a total of eight hydrogen atoms needed to complete the structural formula of cyclobutane. Thus, the correct answer is B) 8.

The Carbon-Carbon Bonding of Cyclobutane Is Shown Below