Quiz Review: Lewis structures of Molecules

According to the octet rule, most elements need _______ valence electrons.

• 2

• 8

• 6

• 18

Which of the following is the correct Lewis dot structure for a molecule of fluorine, F₂?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Each line in a Lewis structure represents __________ electron(s).

• 3

• 2

• 1

• 4

What is the correct Lewis structure for ammonia, NH₃?

• 
• 
• 
• 

Which is the correct Lewis structure for carbon dioxide?

• 
• 
• 
• 

How many total lone pairs (unshared pairs) are present in a Lewis structure for carbon dioxide, CO₂?

(Hint: draw a Lewis structure)

• 0

• 1

• 2

• 3

• 4

How many lone pairs (unshared pairs) are present in a molecule of ammonia, NH₃?

(Hint: draw a Lewis structure)

• 0

• 1

• 2

• 3

Is this a valid Lewis structure for CH₂O?

• Yes

• No

Tags

NGSS.HS-PS1-1

Which of the following is a valid Lewis structure for CH₃Cl?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

Three pairs of electrons are shared in a ____.

• single bond

• double bond

• triple bond

Tags

NGSS.HS-PS1-1