Question

fill in the missing atoms or groups to complete the structure of 3,4 - dibromo - 2 - methylpentanoic acid. provide your answer below:

Explanation:

Step1: Analyze the parent chain

The parent chain is pentanoic acid, which has 5 carbon atoms. The -oic acid suffix indicates a carboxylic acid functional group (\( -COOH \)). So the first carbon (left - most in the chain shown) should be part of the \( -COOH \) group. The first box (left - most) is \( -OH \), and the double - bonded box is \( =O \).

Step2: Locate the methyl group

The compound has a 2 - methyl group. So the second carbon in the chain has a \( -CH_3 \) group.

Step3: Locate the bromine atoms

The compound is 3,4 - dibromo. So the third and fourth carbons in the chain have \( -Br \) groups.

Step4: Check hydrogen saturation

Carbon forms 4 bonds. For the fifth carbon (right - most in the chain shown, which is bonded to one \( C \) and one \( H \)), it needs two more \( H \) atoms.

Answer:

From left to right (including the double - bonded box): \( -OH \), \( =O \), \( -CH_3 \), \( -Br \), \( -Br \), \( -H \), \( -H \)