Periodic Table Review

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

How many valence electrons does carbon have?

• 4

• 5

• 6

How many valance electrons does Si contain? (click to see image)

• 4

• 28

• None of these

How many valence electrons are found in atoms of Calcium?

• 4

• 5

• 2

What is the symbol for gold?

• Ag

• G

• Au

Potassium's symbol is?

• Po

• P

• K

Na is the symbol for?

• Nitrogen

• Sodium

• Salt

Protons are equal to:

• Atomic Mass

• Number of neutrons

• Atomic Number

How many protons does Lithium have?

• 7

• 6.941

• 3

How many protons does Neon have?

• 10

• 20.18

• 10.18