Question

please tell 1to20 element and atom number​

Answer 1

Answer:

★ element-atomic number ★

★Hydrogen-1

★helium-2

★lithium-3

★berlium-4

★boron-5

★carbon-6

★nitrogen-7

★oxygen-8

★flurine-9

★neon-10

★sodium-11

★magnesium-12

★aluminum-13

★silicon-14

★Phosphorus-15

★Sulphur-16

★chlorine-17

★argon-18

★potassium-19

★calcium-20

Answer 2

Step-by-step explanation:

1. hydrogen

2. Helium

3. lithium

4. beryllium

5. boron

6. Carbon

7. Nitrogen

8. Oxygen

9. Flourine

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.

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