# Chapter 7 - Quantum Mechanics and The Atom - Exercises - Page 330: 29

m = -l to +l

#### Work Step by Step

m denotes the magnetic quantum number, which distinguishes the orbitals of the sub-shells by defining their orientation. m is given by: l=0, m=0 l=1, m=-1,0,+1 l=2, m=-2,-1,0,+1,+2 and so on

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