Answer
a. 0
b. 1-, 0, +1
c. -2, -1, 0, +1, +2
d. -3, -2, -1, 0, +1, +2, +3
Work Step by Step
$m_{l} = 0, ±l$, hence:
For l = 0, m = 0
For l=1, m = 0, ±1
For l=2, m=0, ±2
For l=3, m = 0, ±3
Thus, as the value for l increases, the number of possible values for m increases as well.
