Describes the distribution of electrons.
The combination of them all specifies the wavefunction. You can think of it as an address
to an electron
Analogy: Finding Person on Campus
Building number 403 Room number 1100 Row FChair 1
Male or Female
l s Quantum Number- Principle Quantum Number
______________________- “n” Can have any positive integer.
Principle quantum number
We saw this in the ____________ as the energy ?▯?? ▯ ▯▯▯▯ ▯▯▯ ▯▯▯ ▯▯▯ ▯ Quantum Number-Angular Momentum Quantum Number
Angular Momentum Quantum Number- “l”
Distinguishes the orbitals of different shape.
Values have letters associated with them.
0=s, 1=p, 2=d, 3=f, 4=g,........ These are associated with the atomic orbitals we just
Can be any integer from 0 to n-1.
Question: For the 4 th energy shell, what are the orbitals present?
n allowed values of l
1 2 3 4
Quantum Numbers- Magnetic Quantum Number Magnetic Quantum number- “m ” (read
as m sub l)
Distinguishes orbitals that have same n and l (same energy and shape) but having a
Allowed values are from –l...0...l
Table of Allowed Value