Energy Levels and Valence Electrons

Which is an electron?

• A
• B
• C

Tags

NGSS.MS-PS1-1

How many electrons go in the first shell (ring) ?

• 6

• 8

• 4

• 2

This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

How many valence electrons does Silicon (Si) have?

• 8

• 7

• 5

• 4

How many valence electrons does Lithium (Li) have?

• 8

• 1

• 5

• 2

How many valence electrons does Bromine (Br) have?

• 5

• 6

• 7

• 8

Which of these is incorrect?

• 
• 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

Which of these is correct?

• 
• 
• 

This could be the dot diagram of 

• Ne
• Si
• Al
• Be

Tags

NGSS.MS-PS1-1

What is this element?

• Beryllium (atomic #4)

• Boron (atomic #5)

• Carbon (atomic #6)

• Nitrogen (atomic #7)

Tags

NGSS.MS-PS1-1