Question

mass number of first 30 elements

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Answer 1

Element A num At m

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

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Answer 2

Answer:

ATOMIC NUMBER ELEMENT ATOMIC MASS

1 Hydrogen 1.008

2 Helium 4.0026

3 Lithium 6.94

4 Beryllium 9.0122

5 Boron 10.81

6 Carbon 12.011

7 Nitrogen 14.007

8 Oxygen 15.999

9 Fluorine 18.998

10 Neon 20.180

11 Sodium 22.990

12 Magnesium 24.305

13 Aluminium 26.982

14 Silicon 28.085

15 Phosphorus 30.974

16 Sulfur 32.06

17 Chlorine 35.45

18 Argon 39.948

19 Potassium 39.098

20 Calcium 40.078

21 Scandium 44.956

22 Titanium 47.867

23 Vanadium 50.942

24 Chromium 51.996

25 Manganese 54.938

26 Iron 55.845

27 Cobalt 58.933

28 Nickel 58.693

29 Copper 63.546

30 Zinc 65.38