Question

first 20 elements and their symbols are ​

Answer 1

Answer:

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Answer 2

Explanation:

Atomic Number. Element. Symbol

1 Hydrogen H

2 Helium He

3 Lithium Li

4 Beryllium Be

5 Boron B

6 Carbon C

7 Nitrogen N

8 Oxygen O

9. Fluorine F

10 Neon. Ne

11 Sodium. Na

12 Magnesium Mg

13 Aluminium Al

14 Silicon. Si

15. Phosphorus P

16 Sulfur S

17. Chlorine Cl

18 Argon Ar

19 Potassium. K

20. Calcium Ca