What is the lewis symbol of water?

1 Answer

t-nez's profile pic

t-nez | High School Teacher | (Level 3) Associate Educator

Posted on

The Lewis dot structure for water is shown in the attached image. Here are the steps for drawing a Lewis dot structure:

1. Determine the total number of valence electrons:

hydrogen: 2 atoms X 1 valence electron = 2 valence electrons

oxygen: 1 atom X 6 valence electrons = 6 valence electrons

total: 2 + 6 = 8 valence electrons

2. Arrange the atoms:

The least electronegative atom usually goes in the center, but in this case oxygen is the center atom because a hydrogen atom can only have one pair of electrons.

3. Arrange the electrons so that each atom has a complete octet:

Hydrogen is an exception to the octet rule because it has a complete energy level with only two electrons. Each hydrogen atom shares a pair of electrons with the oxygen atom. The oxygen atom has two shared and two unshared pairs for a total of eight electrons, a complete octet.

Images:
This image has been Flagged as inappropriate Click to unflag
Image (1 of 1)