Question

Molecular formula of 20 element

Answer 1

Answer:

Explanation:

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. Aluminum, Al;
14. Silicon, Si;
15. Phosphorus, P;
16. Sulfur, S;
17. Chlorine, Cl;
18. Argon, Ar;
19. Potassium, K;
20. Calcium, Ca…

Answer 2

Answer:

1) Hydrogen- 1u

2) Helium-4u

3) Lithium-7u

4) Beryllium-9u

5) Boron-10u

6) Carbon-12u

7) Nitrogen-14u

8) Oxygen-16u

9) Fluorine-19u

10) Neon-20u

11) Sodium-23u

12) Magnesium-24u

13) Aluminum-27u

14) Silicon-28u

15) Phosphorus-31u

16) Sulphur-32u

17) Chlorine-35.5u

18)Argon-40u

19) Potassium-39u

20) Calcium-40u

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