Question

To draw the orbital diagrams of first twenty element of periodic table (mentioning electronic

configuration & valency)​

Answer 1

Answer:

sr. no. Element electronoc conf valency

1. Hydrogen 1 1

2. Helium 2 0

3. Lithium 2,1 1

4. Beryllium 2,2 2

5. Boron 2,3 3

6. Carbon 2,4 4

7. Nitrogen 2,5 5

8. Oxygen 2,6 6

9. Flourine 2,7 7

10. Neon 2,8 0

11. Sodium 2,8,1 1

12. Magnesium 2,8,2 2

13. Aluminum 2,8,3 3

14. Silicon 2,8,4 4

15. Phosphorous 2,8,5 5

16. Sulphur 2,8,6 6

17. Chlorine 2,8,7 7

18. Argon 2,8,8 0

19. Potassium 2,8,8,1 1

20. Calcium 2,8,8,2 2