Lewis Structure Practice Worksheet
A Grade 11 Chemistry worksheet focusing on drawing and understanding Lewis Structures, including octet rule, formal charge, and resonance.
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Lewis Structure Practice Worksheet
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Read each question carefully and provide detailed answers. Show all your work for drawing Lewis Structures, including calculations for valence electrons, formal charges, and resonance structures where applicable.
1. In a Lewis structure, a single bond represents the sharing of electrons.
2. The rule states that atoms tend to gain, lose, or share electrons to achieve eight electrons in their outermost shell.
3. The sum of the formal charges in a neutral molecule must equal .
4. When multiple valid Lewis structures can be drawn for a single molecule, these are called structures.
Draw the Lewis structure for the following molecules/ions. Show all valence electrons and formal charges.
1. CO2 (Carbon Dioxide)
2. NH3 (Ammonia)
3. SO4^2- (Sulfate Ion)
1. Which of the following elements can expand its octet in a Lewis structure?
Carbon
Nitrogen
Phosphorus
Oxygen
2. What is the formal charge on the central nitrogen atom in the nitrate ion (NO3-)?
-1
0
+1
+2
1. All atoms in a stable Lewis structure must satisfy the octet rule.
True
False
2. Resonance structures are different molecules that rapidly interconvert.
True
False