Unit 5: Electron Configurations

Question 1

Principal Energy Levels

Answer 1

• n=1,2,3,4 etc.
• Describes the average distance of an electron from the nucleus
• Energy increases as you move further from the nucleus
• WIthin each energy level, electrons occupy sublevels

Question 2

Electron Configuration

Answer 2

• Show how electrons are distributed within an atom
• Location of electrons cannot be pinpointed (probability made instead)

Question 3

Sublevels

Answer 3

• Correspond to the different areas an electron can be located in an atom
• Represented by letters: s,p,d,f,g,h,i, etc.
• Shapes: s=spherical, p=dumbell, d=clover, f= double clover

Question 4

How many sublevels are in energy levels 1-5?

Answer 4

1: 1s
2: 2s, 2p
3: 3s, 3p, 3d
4: 4s, 4p, 4d, 4f
5: 5s, 5p, 5d, 5f, (5g)