there are several different models that represent compounds. one type of model is shown. what type of model…

Answer:

D. a ball - and - stick model

Brief Explanation:

In a ball - and - stick model, atoms are represented as balls and bonds as sticks, which is what is shown in the image. A structural formula shows the arrangement of atoms in a molecule using lines for bonds but not as 3 - D balls and sticks. A chemical formula just shows the number and types of atoms in a molecule. A space - filling model has atoms represented as spheres that fill space proportionally to their size without the distinct sticks for bonds.