Learn How To Draw Lewis Structures Easily: 4 Simple Steps For Perfect Chemistry Diagrams Every Time

This video tutorial explains how to draw Lewis structures using a four-step method. It covers the addition of valence electrons, drawing the skeleton structure, distributing remaining electrons, and using double or triple bonds to satisfy the octet rule. The tutorial includes examples for CH4, NH3, and CO2, demonstrating the application of these steps to ensure correct Lewis structures.

What is the first step in drawing a Lewis structure?

• Draw the skeleton structure

• Add up the valence electrons

• Distribute electrons to electronegative atoms

• Use double or triple bonds

In the CH4 example, why is carbon placed in the center of the skeleton structure?

• Carbon is the least electronegative

• Carbon is a metal

• Carbon is the first element in the formula

• Carbon has the most valence electrons

How many valence electrons are used in the skeleton structure of NH3?

• 10

• 8

• 6

• 4

Why does NH3 not require double or triple bonds?

• All atoms are already satisfied with their electron count

• Hydrogen can share more than 2 electrons

• Nitrogen is satisfied with 6 electrons

• NH3 is an exception to the octet rule

In the CO2 example, why are double bonds necessary?

• To satisfy the octet rule for carbon

• To reduce the number of electrons

• To make the molecule more stable

• To increase the electronegativity of oxygen

What happens to the lone pairs on oxygen in CO2 when forming double bonds?

• They are transferred to another atom

• They are shared as bonds with carbon

• They remain unchanged

• They are removed completely

How many total electrons are around each oxygen atom in the final CO2 structure?

• 10

• 6

• 4

• 8