1 to 30 elements with atomic number and round off atomic mass
Answers
Element Atomic number Atomic mass
- Hydrogen 1 1
- Helium 2 4
- Lithium 3 6.94
- Beryllium 4 9.01
- Boron 5 10.81
- Carbon 6 12.01
- Nitrogen 7 14.01
- Oxygen 8 15.99
- Fluorine 9 19
- Neon 10 20.18
- Sodium 11 22.99
- Magnesium 12 25.31
- Aluminium 13 26.98
- Silicon 14 28.09
- Phosphorus 15 30.97
- Sulphur 16 32.07
- Chlorine 17 35.45
- Argon 18 39.95
- Potassium 19 39.10
- Calcium 20 40.08
- Scandium 21 44.96
- Titanium 22 47.87
- Vanadium 23 50.94
- Chromium 24 52
- Manganese 25 54.94
- Iron 26 55.85
- Cobalt 27 58.93
- Nickel 28 58.69
- Copper 29 63.55
- Zinc 30 65.41
The first 30 elements from the periodic table with their respective atomic number and atomic mass are:
1. Hydrogen - At. mass = 1
2. Helium - At. mass = 4
3. Lithium - At. mass = 7
4. Beryllium - At. mass = 9
5. Boron - At. mass = 11
6. Carbon - At.mass = 12
7. Nitrogen - At. mass = 14
8. Oxygen - At. mass = 16
9. Fluorine - At. mass = 19
10. Neon - At. mass = 20
11. Sodium - At.mass = 23
12. Magnesium - At. mass = 24
13. Aluminium - At.mass = 27
14. Silicon - At.mass = 28
15. Phosphorous - At.mass = 31
16. Sulfur - At.mass = 32
17. Chlorine - At.mass = 35
18. Argon - At.mass = 40
19. Potassium - At.mass = 39
20. Calcium - At.mass = 40
21. Scandium - At.mass = 45
22. Titanium - At.mass = 48
23. Vanadium - At.mass = 52
24. Chromium - At.mass = 52
25. Manganese - At.mass = 55
26. Iron - At.mass = 56
27. Cobalt - At.mass = 59
28. Nickel - At.mass = 59
29. Copper - At.mass = 64
30. zinc - At.mass - 65
- 1-30 represents the atomic number of respective elements.
- Atomic mass: It is defined as the average mass of the elements and it is measured in atomic mass units.
- Atomic Number: It is defined as the number of protons of an element.
- Periodic table: It is a table of elements arranged according to their atomic number and there are a total of 118 elements present in the periodic table.