A. Describe its electron pair geometry. (Include the shape of the molecule, taking into account all electron pairs.) (3 points)

If you draw the correct Lewis dot structure or water, you will see that the oxygen has TWO lone pairs of electrons. The two hydrogen atoms and these two lone electron pairs are as far apart as possible at about 109º angle. This makes the electron pair geomety tetrahedral.

The molecular shape is bent.

Water has 4 regions of electron density around the central oxygen atom (2 bonds and 2 lone pairs). These are arranged in a tetrahedral shape. The resulting molecular shape is bent with an H-O-H angle of 104.5°.

Explanation:

You can think about molecular geometry and electron-pair geometry as being two sides of the same coin.

The difference between them is that electron-pair geometry deals with the arrangement of the regions of electron density that surround an atom, and molecular geometry only deals with the arrangement of the atoms that make up a molecule.

As you know, a region of electron density can be

a single, double, or triple bond

→all three count as a single region of electron density

a lone pair of electrons

When determining electron-pair geometry, you count all the regions of electron density that surround a central atom. However, when determining molecular geometry, you only count bonds to other atoms!

In your example, hydrogen sulfide,

H2S

, has the following Lewis structure

(hope this helps can i have brainlist plz)