lecture 2

Question 1

What is the Pauli Exclusion principle?

Answer 1

No two electrons in an atom can have the same four QN

Question 2

What is the Aufbau principle?

Answer 2

The electrons fill orbitals from lowest energy orbital upwards

Question 3

What is the Hund principle?

Answer 3

Electrons fill orbitals of the same energy to give the maximum number of unpaid electrons. i.e electrons arranged to give a maximum number of parallel spins

Question 4

What is the Schrodinger wave equation?

Answer 4

Describes the properties of electrons when they behave as a wave.

Question 5

What are the two properties that the Schrodinger wave equation consists of?

Answer 5

• The radial function

- The angular function

Question 6

What is the radical function?

Answer 6

Describes the wave only in terms of distance from nucleus

Question 7

What is the angular function?

Answer 7

Describes how the amplitude of the electron wave varies with direction

Question 8

What happens when the wave function = 0

Answer 8

This is a node