Valence Electrons and Lewis Dot Structures

What happens when the sodium atom loses an electron?

• It become negatively charged 

• It become positively charged

• none

How many more valence electrons does Oxygen need to be stable?

• 6

• 2

• 4

• It's already stable with 8

Tags

NGSS.HS-PS1-1

Elements that have atoms with stable valence electron configurations are

• Group 1

• Group 2

• Group 17

• Group 18

Tags

NGSS.HS-PS1-1

If an atom loses two electrons what charge will it have?

• + 2

•  - 2

• +1

• -1

Draw the lewis dot structure for F2. Which of the following is the correct Lewis dot structure for the molecule F₂?

• A

• B

• C

• D

How many valence electrons does phosphorus have?

• 15

• 4

• 5

• 31

Tags

NGSS.HS-PS1-1

This is a correct dot diagram for oxygen (O)

• true

• false

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

When drawing Lewis structures, only __________ electrons are used.

• inner shell

• core

• valence

• stable

Tags

NGSS.HS-PS1-1

Which of the following is the correct Lewis structure for CH₂O?

• Option A

• Option B

• Option C

• Option D