Question

suru ke 25 tatva ka atomic maas kya h​

Answer 1

Answer:

1. Hydrogen. 1

2. Helium. 4

3. Lithium. 7

4. Beryllium. 9

5. Boron. 10/11

6. Carbon. 12

7. Nitrogen. 14

8. Oxygen. 16

9. Flurorine. 19

10. Neon. 20

11. Sodium. 23

12. Magnesium. 24

13. Aluminium. 27

14. Silicon. 28

15. Phosphorus. 31

16. Sulphur. 32

17. Chlorine. 35.5

18. Argon. 40

19. Potassium. 39

20. Calcium. 40.

Explanation:

i hope that these answers may help you.

Answer 2

Atomic Number Atomic Mass

1. 1
2. 4
3. 7
4. 9
5. 10
6. 12
7. 14
8. 16
9. 19
10. 20
11. 23
12. 24
13. 27
14. 28
15. 31
16. 32
17. 35.5
18. 40
19. 39
20. 40