# Which set is correct for an electron in $4f-$orbital?

$\begin{array}{1 1}(a)\;n=3,l=2,m_l=-2,m_s=\large\frac{1}{2}\\(b)\;n=4,l=4,m_l=-4,m_s=\large\frac{1}{2}\\(c)\;n=4,l=3,m_l=+1,m_s=\large\frac{1}{2}\\(d)\;n=4,l=3,m_l=+4,m_s=+\large\frac{1}{2}\end{array}$

For $4f$-orbital $n=4,l=3$
For $l=3,m\neq 4$
Hence (c) is the correct answer.