Question

Write The elements atomic number from 1 to 20 with their symbol

Answer 1

Answer:

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. magnisium mg
13. aluminium al
14. silicon si
15. phosphorus p
16. sulphur s
17. chlorine cl
18. argon ar
19. potassium k
20. calcium ca

Explanation:

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Answer 2

Answer:

hydrogen H

helium He

lithium Li

berilium Be

boron B

carbon C

nitrogen N

oxygen O

fluorine F

neon Ne

sodium Na

magnesium Mg

Aluminium Al

Silicon Si

Phosphorus P

sulphur S

Chlorine Cl

Argon Ar

pottasium K

Calcium Ca

Explanation:

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