Question

Use the Molecule Shape simulator (http://openstaxcollege.org/l/16MolecShape) to explore real molecules. On the Real Molecules tab, select “model” mode and S₂O. What is the model bond angle? Explain whether the “real” bond angle should be larger or smaller than the ideal model angle.

Short answer

The model angle is\({120^\circ }\), as expected for a trigonal planar electron-group shape.

Step-by-step solution

Definition of molecules

The number of atomic nuclei making up a molecule is a determinate number.

A molecule is a particle made up of two or more atoms that are chemically bonded together.

Explanation

As expected for a trigonal planar electron-group shape, the model angle is \({120^\circ }\)

The true angle, on the other hand, should be smaller, owing to the fact that the lone pair takes up more space and compresses the bonds to\({119^\circ }\).

Therefore, for a trigonal planar electron-group shape, the model angle is\({120^\circ }\), as expected.