CBE30361 Lecture Notes - Lecture 3: Magnetic Quantum Number, Principal Quantum Number

• School: ND
• Department: Chemical & Biomolecular Engr.
• Course: CBE30361
• Professor: Ruilan Guo

Document Summary

Electrons are in orbitals defined by a probability. Each orbital at a discrete energy level is determined by quantum numbers. Principal quantum number, n n describes the principal energy level-shell of the electron n = 1, 2, 3, 4, (k, l, m, n, ) Describes the distance of the energy level/electron shell from the nucleus. Small numbers = close to nucleus, big numbers = far from nucleus l signifies the subshells (the shape of the electron subshells-orbital) l = 0, 1, 2, 3, , n-1 (s, p, d, f, ) Magnetic quantum number, ml ml defines the number of energy states for each subshell ml = 1, 3, 5, 7, (-l to +l) Spin quantum number, ms ms defines the spin orientation of electrons: either up or down ms = The smaller the quantum number, the lower the energy level. Possible overlap in energy of a state, especially for d and f states.