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

Three pairs of electrons are shared in a

• Single bond
• Double bond
• Triple bond

Tags

NGSS.MS-PS1-1

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

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

How many electrons can be used in the Lewis Structure for : NO₃ -

• 23
• 20
• 18
• 24

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 available for bonding in the sulfate ion (SO₄^-2)?

• 30 electrons
• 32 electrons
• 28 electrons
• impossible to tell

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

This is a correct dot diagram for oxygen (O)

• true
• false

Tags

NGSS.HS-PS1-1

What is the correct Lewis structure for NH₃?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

PF₃ has how many lone pairs total?

• 1

• 2

• 10

• 20