Unit 5 Bohr Models and Valence Electrons Preview

On the periodic table, Groups are

• Horizontal rows

• Vertical columns

On the periodic table, Periods are

• Horizontal rows

• Vertical columns

What is a valence electron?

• Electrons in the first energy shell

• Electrons in the second energy shell

• Electrons in the outer shell

• Total number of electrons

The innermost energy level has a maximum of how many electrons?

• 1

• 2

• 6

• 8

What does the Bohr Model represent?

• The structure of molecules

• The structure of the Solar System

• The structure of an atom

• The structure of East Hills

Which element is this?

• Nickel

• Neon

• Sodium

• Nitrogen

Name this element.

• Argon

• Chlorine

• Aluminum

• Boron

What is the atomic number of this atom?

• 2

• 4

• 6

• 8

What is the mass number of this atom?

• 1

• 3

• 4

• 7

What is this element?

• Beryllium (atomic #4)

• Boron (atomic #5)

• Carbon (atomic #6)

• Nitrogen (atomic #7)