pa help naman po.
Down

1. Weighted average of mass of an element?

2. What is oxygen?

3. What is column 2?

5. What element has the atomic mass of

1.008?

8. Who created the Periodic Table?
10. AU is what for Gold?

11. What are the horizontal lines called?

12. How many protons does boron have?

14. What is column 17?

16. What is hydrogen?

Across

4. What is column 18?

6. What element has the symbol S?

7. What is another name for rows?

9. What kind of element is Helium?

13. The number of protons is equal to the

what?
15. What are the vertical lines called?

17. All elements have protons neutrons and

what?

18. What is another word for columns?

19. Columns 3-12 are what kinds of metals?

20. What is column 1?


​