Question

20 elements periodic meta

Answer 1

THE FIRST 20 ELEMENTS OF PERIODIC TABLE ARE:---------

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1. Hydrogen { H }

2. Helium { He }

3. Lithium { Li }

4. Baryllium { Be }

5. Boron { B }

6. Carbon { C }

7. Nitrogen { N }

8. Oxygen { O }

9. Fluorine { F }

10. Neon { N }

11. Sodium { Na }

12. Magnesium { Mg }

13. Aluminium { Al }

14. Silicon { S }

15. Phosphorus { P }

16. Sulphur { S }

17. Chlorine { Cl }

18. Argon { Ar }

19. Potassium { K }

20. Calcium { Ca }.

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