Which of the following alkanes is the least branched?

Which of the following alkanes is the least branched?

Correct Answer: Butane

Step 1: Understand what alkanes are. Alkanes are hydrocarbons with only single bonds between carbon atoms.
Step 2: Know that branched alkanes have carbon chains that split off into smaller chains, while straight-chain alkanes do not.
Step 3: Identify the alkanes given in the options. Common examples include butane, propane, and others.
Step 4: Compare the structures of the alkanes. Look for the one that has the least number of branches.
Step 5: Recognize that butane has a straight chain of four carbon atoms and no branches, making it the least branched alkane.

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