Question

hot spot 1 point click on the carboxyl group.

Explanation:

The carboxyl group is defined as \(-\text{COOH}\) (or \(\text{HO}-\text{C}=\text{O}\) with the carbon double - bonded to one oxygen and single - bonded to a hydroxyl group). In the given structure, the right - most carbon atom is double - bonded to an oxygen (\(\text{O}\)) and single - bonded to a hydroxyl group (\(\text{HO}\)). So, we identify the atoms that make up the carboxyl group: the carbon (\(\text{C}\)) that is double - bonded to \(\text{O}\) and single - bonded to \(\text{HO}\), along with the associated \(\text{O}\) (double - bonded) and \(\text{HO}\) (single - bonded).

Answer:

The carboxyl group is the part of the structure consisting of the carbon atom (the right - most \(\text{C}\)) double - bonded to an oxygen (\(\text{O}\)) and single - bonded to a hydroxyl group (\(\text{HO}\)), i.e., the group \(\text{HO}-\text{C}=\text{O}\) (the carbon, the double - bonded oxygen, and the hydroxyl - bonded oxygen and hydrogen). To click on it, we would click on the atoms involved in this group: the \(\text{C}\) (right - most), the double - bonded \(\text{O}\), and the \(\text{O}\) and \(\text{H}\) of the \(\text{HO}\) group.