1. Who first devised the Periodic Table as we know it today ?

2. When was it devised ?

3. Which element has the atomic number 1 ?

4. What is the Atomic Number ?

5. What are the horizontal rows of the table called ?

6. Which element has the atomic symbol K ?

7. Name the Noble [Inert] gases ?

8. What is the chemical symbol for Tungsten ?

9. Which metallic element, atomic number 50 , has the symbol Sn ?

10. Which chemist discovered amongst others, Potassium , Sodium and Strontium ?

11. Which group contains the elements Chlorine , Bromine and Iodine ?

12. What are the block of elements in Groups 3 to 12 commonly known ?

13. What is the chemical symbol for Gold ?

14. What do all the elements in a group share , leading them to have common properties ?

15. What is the total number of elements in the periodic table ?

16. How many of these occur naturally ?

17. Of which Group is Sodium a member ?

18. Which element , atomic number 14 is the second most abundant on Earth ?

19. Alphabetically which is the first element in the table ?

20. And the last ?

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