Lewis Dot Structure

What do Bohr Models show us?

• Protons, Neutrons, and Electrons

• Protons Only

• Electrons Only

• Protons and Neutrons

True or False: Lewis Dot Structures use all of the electrons for an element.

• False

• True

The vertical rows of the periodic table are called:

• Groups

• Periods

The numbers at the top of a column are useful because,

• they describe the number of atomic orbitals the atom has.

• they describe the number of electrons the atom has.

• they identify the number of valence electrons the group has.

How many valence electrons are in carbon?

• 2

• 4

• 6

• 8

How many valence electrons does Boron have?

• 3

• 13

• 6

Which group is Boron located in on your periodic table?

• Group 13, so it has 3 valence electrons

• Group 3, so it has 3 valence electrons

What do valence electrons help us predict?

• Reactivity, and how chemical substances are formed

• New Elements

• How they will combine with other elements.