what are the symbols,atomic number,atomic mass of first 20 elements
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I tell you 26 atomic number their elements and their symbols you can see in
the picture
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jeevans:
where is atomic mass
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Hey mate your answer is here
1. Hydrogen H Atomic mass no. = 1
2. Helium He = 4
3.Lithium Li = 7
4. Beryllium Be = 9
5. Boron B = 11
6. Carbon C = 12
7. Nitrogen N = 14
8. Oxygen O = 16
9. Fluorine F = 19
10. Neon Ne = 20
11. Sodium Na = 23
12. Magnesium Mg = 24
13. Aluminium Al = 27
14. Silicon Si = 28
15. Phosphorus P = 30
16. Sulphur S = 32
17. Chlorine Cl = 35.5
18. Argon Ar = 39
19. Potassium K = 39
20. Calcium Ca = 40
Hope it will help you
Thanks
1. Hydrogen H Atomic mass no. = 1
2. Helium He = 4
3.Lithium Li = 7
4. Beryllium Be = 9
5. Boron B = 11
6. Carbon C = 12
7. Nitrogen N = 14
8. Oxygen O = 16
9. Fluorine F = 19
10. Neon Ne = 20
11. Sodium Na = 23
12. Magnesium Mg = 24
13. Aluminium Al = 27
14. Silicon Si = 28
15. Phosphorus P = 30
16. Sulphur S = 32
17. Chlorine Cl = 35.5
18. Argon Ar = 39
19. Potassium K = 39
20. Calcium Ca = 40
Hope it will help you
Thanks
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