Quantum Numbers

Today in class we learned about quantum numbers. Every set of quantum numbers contains four numbers that represent different values.

• The first quantum number is the value of the principal energy level, labeled as n

• The second quantum number is the number that determines the type of sublevel, labeled as l

• The third quantum number runs from -1 to +1, labeled as ml

• The fourth, and last, quantum number is spin of the electrons, labeled as ms

http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch6/quantum.html