Question

1to20 atomic numberandits molarmass and atomic mass

Answer 1

Answer:

Atomic number. Name. Mass number

1.Hydrogen. 1

2.Helium. 4

3.Lithium. 7

4.Berrylium 9

5.Boran. 11

6.Carbon 12

7.Nitrogen 14

8.Oxygen. 16

9.Fluorine 18

10.Neon. 20

11.Sodium 23

12.Magnesium. 24

13. aluminium. 26

14.Silicon. 28

15. Phosphorous 30

16.Sulphur. 32

17. Chlorine. 35.5

18.Argon. 40

19. Potassium. 39

20. Calcium. 40

Answer 2

At. No. Elements. Mass

At. No. Elements. Mass1.Hydrogen. 1

At. No. Elements. Mass1.Hydrogen. 12.Helium 4

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.94

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.01

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.81

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.01

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.01

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.99

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.999.Fluorine . 19

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.999.Fluorine . 1910.Neon 20.18

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.999.Fluorine . 1910.Neon 20.1811.Sodium 22.99

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.999.Fluorine . 1910.Neon 20.1811.Sodium 22.9912.Magnesium . 25.31

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.999.Fluorine . 1910.Neon 20.1811.Sodium 22.9912.Magnesium . 25.3113.Aluminium 26.98

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.999.Fluorine . 1910.Neon 20.1811.Sodium 22.9912.Magnesium . 25.3113.Aluminium 26.9814.Silicon 28.09

At. No. Elements. Mass1.Hydrogen. 12.Helium 43.Lithium 6.944.Beryllium . 9.015.Boron 10.816.Carbon 12.017.Nitrogen 14.018.Oxygen . 15.999.Fluorine . 1910.Neon 20.1811.Sodium 22.9912.Magnesium . 25.3113.Aluminium 26.9814.Silicon 28.0915.Phosphorus . 30.97