Lewis Dot Diagram Warm Up

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

• 2
• 8
• 6
• 18

How many valence electrons does Tin (Sn) have?

• 8

• 7

• 5

• 4

Valence electrons are: 

• Electrons farthest away from the nucleus
• Electrons closest to the nucleus
• Electrons that just come and go - they don't stay with the atom
• Electrons in the second shell

Which of the following has a full valence shell?

• Oxygen
• Neon
• Barium
• Carbon

This is a correct dot diagram for neon (Ne)

• true

• false

Which of these is correct?

• 
• 
• 

What is a valence electron?

• an electron that is found in the outermost shell of an atom. 
• an electron found in the innermost shell of an atom.
• an electron found in the middle shell.

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

• 3

• 4

• 5

This is a Bohr Diagram of Nitrogen. Nitrogen has

(a)   electrons.

• 7
• 2

• 5

This is a Bohr Diagram of Nitrogen. Nitrogen has

​ (a)   valence electrons.

• 7
• 2

• 15
• 5