Question

Which of the following sets of quantum numbers is correct for an electron in 3d orbital?

• A. $3,0,0,+\frac{1}{2}$
• B. $3,1,1,-\frac{1}{2}$
• C. $3,2,1,+\frac{1}{2}$
• D. $3,2,3,-\frac{1}{2}$

Answer 1

The correct option is C $3,2,1,+\frac{1}{2}$

The value of n and l for electron belonging to $3d$ sub shell is $3,2$, the m and s values can be $(-2,-1,0,1,2)$ and $\pm 1/2$ respectively. Thus only correct option available is $3,2,1,+1/2$ is option C.