The smallest part of a compound is called a molecule.
The correct answer is an atom. An atom is the smallest part of a compound that retains the chemical properties of that compound. To determine this, we need to understand the basic building blocks of matter. Matter is composed of elements, which are substances made up of only one type of atom. These atoms can combine to form compounds, which are composed of two or more different elements in fixed ratios. Within a compound, the smallest unit is called an atom. To identify the smallest part of a compound, you would need to break it down into its constituent elements and then analyze their structure at the atomic level.
