Chemistry - Lewis Structures Quiz

Lewis structures show

• valence electrons only

• all electrons

• the nucleus and electrons

• only the nucleus

Lone pairs are represented by______and bonding pairs of electrons by______

• two dots; one dot

• two dots; one line

• one line; two lines

• all dots

What is the correct Lewis structure for ammonia NH₃?

• 
• 
• 
• 

Which is the correct structure for carbon dioxide?

• 
• 
• 
• 

How many total valence electrons are participating in bonding in this molecule?

• 8

• 4

• 2

• 3

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

• A
• B
• C
• D

The C atom in CO₂ has how many lone pairs?

• 0

• 1

• 2

• 3

• 4

The N atom in NH₃ has how many lone pairs?

• 0

• 1

• 2

• 3

CCl₄ has how many double bonds?

• 0

• 1

• 2

• 3

In HCN (Carbon is usually the central atom) what kind of bond is between the C and N

• Single

• Double

• Triple