Question

elements from atomic number 1 to 20

Answer 1

Hey friend here is the answer...
1. Hydrogen
2. Helium
3. Lithium
4. Berilium
5. Boron
6. Carbon
7. Nitrogen
8. Oxygen
9 . Fluorine
10.Neon
11. Sodium
12. Magnesium
13.Aluminium
14.Silicon
15. Phosphorus
16. Sulphur
17.Chlorine
18.Argon
19. Potassium
20. Calcium

hope it will help you...
please mark it as a brainliest friend...

Answer 2

Here are the first 20 Elements

1. Hydrogen

2. Helium

3. Lithium

4. Berilium

5. Boron

6. Carbon

7. Nitrogen

8. Oxygen

9 . Fluorine

10.Neon

11. Sodium

12. Magnesium

13.Aluminium

14.Silicon

15. Phosphorus

16. Sulphur

17.Chlorine

18.Argon

19. Potassium

20. Calcium