Understanding Lewis Dot Diagrams and Periodic Table Groups

What does a Lewis Dot Diagram primarily represent for an atom?

• The number of protons

• The outer shell electrons

• The atomic mass

• The total number of electrons

How many valence electrons does an atom in Group 2 have?

• Two

• One

• Four

• Three

Which group in the periodic table corresponds to elements with three valence electrons?

• Group 1

• Group 2

• Group 13

• Group 14

If an element is in Period 3 and Group 2, which element is it?

• Sodium

• Magnesium

• Aluminum

• Silicon

What should be placed in the center of a Lewis Dot Diagram?

• The element symbol

• The electron configuration

• The atomic number

• The number of neutrons