Atomic Theory and Structure The Periodic Table of Elements

by Anthony Carpi, Ph.D.

1. Dmitri Mendeleev organized the chemical elements:

2. The elements in the present periodic table are arranged according to their:

3. A vertical column in the periodic table is called a:

4. A horizontal row in the periodic table is called a:

5. The majority of the elements in the periodic table are:

6. What does Bohr's theory state?

7. What is the capacity of the first electron shell?

8. Which of the following is the electron configuration for carbon:

9. Elements in the some group have:

10. Elements in the same period have:

11. Which element is classified as metalloid?

12. How many valence electrons does calcium have?

13. How many valence electrons does boron have?

We must expect the discovery of many yet unknown elements, for example, elements analogous to aluminium and silicon, whose atomic weight would be between 65 and 75.
- Dmitri Mendeleev

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