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# Which of the following sets of quantum numbers is correct for an electron in $4f$ orbital ?

$\begin{array}{1 1}(A)\;n=4,I=3,m=+4,s=+\frac{1}{2} \\(B)\;n=3,I=2,m=-2,S=+\frac{1}{2} \\(C)\;n=4,I=3,m=+1,s=+\frac{1}{2}\\ (D)\; n=4,I=4,m=-4,s=-\frac{1}{2} \end{array}$

An electron in $4f$ orbital is : $n=4,I=3,m=+1,s=+\frac{1}{2}$