Periodic Trends Review

Which is an electron?

• A
• B
• C

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

How many valence electrons does Tin (Sn) have?

• 8

• 7

• 5

• 4

How many valence electrons does Lithium (Li) have?

• 8

• 1

• 5

• 2

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.

How many valence electrons?

• 2

• 3

• 4

• 5

How many valence electrons are found in atoms of group 14?

• 4
• 3
• 14
• 16

How many valence electrons are found in atoms of group 1?

• 7
• 6
• 4
• 1

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell