Question

Write first 25 elements with their atomic number and mass number

Answer 1

Answer:

1.Hydrogen 1

2.Helium 4

3.lithium 6

4.berilium 8

5.boron 10

6.corbon 12

7. nitrogen 14

8.oxygen 16

9.floren 19

10. neon 20

11.sodium 23

12.magnesium 24

13 Aluminium 27

14.silicon 28

15 . phosphorus 31

16.sulfure 32

17.chlorine 35.5

18 .argan 37

19.potasium 19

20.calcium 40

21.scandium 23

22 titanum 25

23.vanadium 46

24 chromium 48

25.magnese 50