Lewis Structures

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

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

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

• 4
• 6
• 8
• 2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

What is the correct structure for BF₃?

• Option A.
• Option B. 
• Option C.
• Option D.

Tags

NGSS.MS-PS1-1

How many valence electrons are in Phosphorus?

• 15
• 4
• 5
• 31

Tags

NGSS.HS-PS1-1

This is a correct dot diagram for oxygen (O)

• true
• false

Tags

NGSS.HS-PS1-1

This is a correct dot diagram for fluorine (F)

• true
• false

Tags

NGSS.HS-PS1-1

Which is the correct molecular structure for carbon dioxide?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

How many total valence electrons are participating in bonding in the molecule above?

• 8

• 4

• 2

• 3

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NH₃ has how many lone pairs?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1