Page 1
Energy levels and sub-levelsEnergy 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.
Page 2
Energy levels and sub-levelsEnergy 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
Page 3
Energy levels and sub-levelsEnergy 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
Page 4
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
Page 5
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1
Page 6
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s
Page 7
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1
Page 8
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2
Page 9
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
Page 10
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2
Page 11
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
Page 12
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
p
Page 13
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
p 3
Page 14
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
p 3 6
Page 15
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
Page 16
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
Page 17
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
p 3 6
Page 18
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
p 3 6
d
Page 19
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
p 3 6
d 5
Page 20
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
p 3 6
d 5 10
Page 21
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
18p 3 6
d 5 10
Page 22
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
18p 3 6
d 5 10
4
Page 23
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
18p 3 6
d 5 10
4
s 1 2
p 3 6
d 5 10
Page 24
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
18p 3 6
d 5 10
4
s 1 2
p 3 6
d 5 10
f
Page 25
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
18p 3 6
d 5 10
4
s 1 2
p 3 6
d 5 10
f 7
Page 26
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
18p 3 6
d 5 10
4
s 1 2
p 3 6
d 5 10
f 7 14
Page 27
Energy levels and sub-levelsEnergy levels and sub-levels
Main energy level
Sub-levelsMax. no. of
electron pairs in sub-level
Max. no. of electrons in
sub-level
Max. no. of electrons in main level
1 s 1 2 2
2s 1 2
8p 3 6
3
s 1 2
18p 3 6
d 5 10
4
s 1 2
32p 3 6
d 5 10
f 7 14