Lewis Structures and Molecular Geometry

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

• 2

• 8

• 6

• 18

If electrons are shared unequally then the bond is ___.

• non-polar covalent

• ionic

• non-polar ionic

• polar covalent

If electrons are shared equally, the bond is ____.

• non-polar covalent

• ionic

• non-polar ionic

• polar covalent

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

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• 
• 
• 

When drawing Lewis structures, only __________ electrons are used.

• inner shell

• core

• valence

• stable

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

• 3

• 2

• 1

• 4

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

CHCl₃ has how many double bonds?

• 0

• 1

• 2

• 3

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

• 
• 
• 
•