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Chapter 2: Problem 27

Describe the two commonly used molecular models.

Short Answer

Expert verified
The two common molecular models are the Space-filling model and the Ball and Stick model. The Space-filling model represents atoms as spheres with sizes proportionate to the atom's radius, showing accurate atomic sizes and proximities. The Ball and Stick model represents atoms as balls and bonds as sticks, focusing more on the geometry and structural relations of atoms within the molecule, including bond angles.

Step by step solution

01

Describing the Space-filling Model

The space-filling model is a type of molecular model where atoms are represented as spheres. The radius of the sphere is proportional to the radius of the atom itself. This model is designed to represent the volume occupied by an atom. It gives an idea of the relative sizes of the atoms and their proximities to each other within the molecule.
02

Describing the Ball and Stick Model

The Ball and Stick model is another commonly used model. In this model, atoms are represented by balls and the bonds that hold the atoms together are represented by sticks. The model provides a clear representation of the molecule's geometry. While it does not represent accurate sizes of the atoms, it clearly shows the atoms' relationships and bond angles within the molecule.
03

Differentiating the Two Models

While both models provide valuable information about a molecule's structure, they focus on different aspects. The space-filling model is more about giving an accurate representation of how atoms fill space in a molecule and might help illustrate how different molecules might interact with each other. On the other hand, the Ball and Stick model tends to give a clearer understanding of the molecule's basic structure, showing which atoms are connected to which and at what angles.

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