1. Energy levels and sub-levels A Creative Chemistry PowerPoint Presentation By Nigel Saunders Copyright © 2003 Nigel Saunders, all rights reserved Permission is granted for personal and educational use only. Commercial copying, hiring, lending is prohibited.

2. Energy levels and sub-levels Energy levels These are broadly similar to the “shells” used in GCSE Chemistry You need to know about energy levels 1, 2, 3 and 4 at A Level Energy level 1 is lowest in energy and closest to the nucleus

3. Energy levels and sub-levels Sub-levels The main energy levels contain sub-levels The different main energy levels have different sub-levels in them There are four types: s, p, d, f

4. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level

5. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1

6. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s

7. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s1

8. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s12

9. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122

10. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2

11. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12

12. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 p

13. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 p3

14. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 p36

15. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36

16. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3

17. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 p36

18. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 p36 d

19. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 p36 d5

20. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 p36 d510

21. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 18 p36 d510

22. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 18 p36 d510 4

23. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 18 p36 d510 4 s12 p36 d5

24. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 18 p36 d510 4 s12 p36 d5 f

25. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 18 p36 d510 4 s12 p36 d5 f7

26. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 18 p36 d510 4 s12 p36 d5 f714

27. Energy levels and sub-levels Main energy level Sub-levels Max. no. of electron pairs in sub-level Max. no. of electrons in sub-level Max. no. of electrons in main level 1s122 2 s12 8 p36 3 s12 18 p36 d510 4 s12 32 p36 d510 f714