Introductions to Lewis Dot Structure

What is the correct Lewis Dot Structure for ammonia NH₃

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Which is the correct molecular structure for carbon dioxide?

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How many total valence electrons are participating in bonding in the molecular model shown?

• 8

• 4

• 2

• 3

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

• A
• B
• C
• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons are shared in a double covalent bond?

• 4

• 6

• 2

• 3

How many pairs of electrons are shared between the nitrogen atoms in a molecule of N₂?

• one

• two

• three

• zero

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

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

When writing Lewis Structures, only __________ electrons are used.

• Inner shell
• Core 
• Valence
• Stable

Tags

NGSS.HS-PS1-1

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

• 3
• 2
• 1
• 4

A molecule of methane has what shape?

• Tetrahedral
• Triangular
• Pyramidal
• Octahedral