The 4 Quantum Numbers provide us the coordinates to find the theoretical location of an electron.
Concept #1: The Quantum Mechanical Picture of the Atom
Concept #2: The Quantum Sublevels
The main atomic sub-levels are the s, p, d and f. The sublevels have a set number of electron orbitals, each which can hold two electrons.
Concept #3: The Principal Quantum Number (n)
The principal quantum number tells us the size and energy of an electron orbital.
Concept #4: Calculate the principal quantum number of each atomic sublevel.
7p, 5s, 3d, 4f
Concept #5: The Angular Momentum Quantum Number (l)
The angular momentum quantum number, also known as the azimuthal quantum number, tells us the shape of the electron orbitals.
Concept #6: The Magnetic Quantum Number (mL)
The magnetic quantum number deals with the orientation of the orbital in the space around the nucleus.
Example #1: What l or ml values are allowed if n = 2? How many orbitals exist for n = 2?
How many electrons can have the following quantum sets?
a) n = 4
b) n = 3, l = 1
c) n = 4, mL = -2
d) n = 5, l = 2, mL = -2
Practice: Provide the n, l and ml value for each of the given orbitals.
Practice: State all the l and ml values possible if the principal quantum number is equal to 3.