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List of periodic table elements 1-20

1. Hydrogen (Hy)

2. Helium (H)

3. Lithium (L)

4. Beryllium (B)

5. Boron (Bo)

6. Carbon (Ca)

7. Nitrogen (Ni)

8. Oxygen (Ox)

9. Fluorine (Fl)

10. Neon (N)

11. Sodium (S)

12. Magnesium (M)

13. Aluminum (Am)

14. Silicon (Sc)

15. Phosphorus (Po)

16. Sulfur (Su)

17. Chlorine (C)

18. Argon (A)

19. Potassium (P)

20. Calcium (Cl)