Valence Electron and Lewis Dot

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

• 2
• 8
• 6
• 18

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

• 3

• 4

• 5

How many valence electrons does Tin (Sn) have?

• 8

• 7

• 5

• 4

How many valence electrons does Lithium (Li) have?

• 8

• 1

• 5

• 2

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

How many valence electrons does Bromine (Br) have?

• 5

• 6

• 7

• 8

How many electrons can the first shell hold?

• 2

• 4

• 6

• 8

Which of the following has a full valence shell?

• Oxygen
• Neon
• Barium
• Carbon

This is a correct dot diagram for neon (Ne)

• true

• false

What group is Calcium (Ca) in?

• 3

• 2

• 1