Lewis Structures

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

• 2
• 8
• 6
• 18

Hydrogen needs _____ electrons in its valence shell to be stable.

• 4
• 6
• 8
• 2

What is the correct Lewis Structure for ammonia NH₃

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Which is the correct molecular structure for carbon dioxide?

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In the correct Lewis structure for CH_4, how many unshared electron pairs surround the carbon?

• 2
• 8
• 0
• 4

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

• A
• B
• C
• D

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

• 3
• 2
• 1
• 4

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A
• structure B
• structure C
• structure D

3. Which is a correct Lewis structure for hydrogen cyanide, HCN?

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Three pairs of electrons are shared in a

• Single bond
• Double bond
• Triple bond