List the number and type of bonds in the molecule CH₃CCCH₃.

Question

Quizplus · Accepted Answer

Counting the number of valence electrons of the atoms in the molecule, we get: C=4, H=1, S=6, B=3, and O=6. 
To satisfy the octet rule and complete the valence shell, the carbon atoms must form a triple bond with each other ([CC]≡[CC]). 
Each sulfur atom forms two single bonds with carbon ([SC]), and each boron atom forms one single bond with carbon ([BC]). Finally, each carbon atom forms a single bond with a hydrogen atom ([CH]). 
Therefore, there are 8 single bonds and 1 triple bond, which is choice E.

List the Number and Type of Bonds in the Molecule