Answer
This set is valid.
Work Step by Step
*RULES TO REMEMBER:
- $n\gt0$ and $l\gt0$
- $l\lt n$
- $|m_l|\leq l$, which also means $m_l\leq l$
- There are only 2 possible values for $m_s$: $\frac{1}{2}$ and $-\frac{1}{2}$.
This set is valid.