1. Periodic Table
Dimitri Mendeleev (1834-1907)

2. Group
Period
The Periodic Table

3. Is sodium (Na) a metal, nonmetal or metalloid?

4. Are vertical columns called groups or periods?

5. What is the atomic number of Nitrogen (N)?

6. How many protons does Nitrogen (N) have?

7. What’s the atomic weight of Oxygen?

8. What element has a larger radius, Neon (Ne) or Krypton
(Kr)?

9. Cobalt is a metal. What is the symbolof cobalt
a) C
b) Co
c) CO

10. If iTeach was an element what would it be and why?