Question

What are the possible values of the angular momentum quantum number l all the integer: -3,-2,-1,0,1,2,3, etc?

Answer 1

The angular quantum number $l$ can be any integer (whole number) between 0 and one less than the principal quantum number $(n-1)$. $l$ cannot be -3, -2, or -1. The other solutions depending on what the principal quantum number is.