Which of the following is not a valid set of quantum numbers

A. n = 2, l = 1, m = 0

B. n = 1, l = 0, m = 0

C. n = 3, l = 3, m = 3

I believe the answer is C, n = 3, l = 3, m = 3. The magnetic quantum number, or

ml, can only take values that range from - l to + l, as you can see in the table above.

For option C), the angular momentum quantum number of equal to + + 2, which means that ml can have a maximum value of + 2. Since it is given as having a value of + 3**, this set of quantum numbers is not a valid one.

The other three sets are valid and can correctly describe an electron.