Question

The set of principal $\left(n\right)$ azimuthal $\left(l\right)$ and magnetic $\left(m\right)$ quantum numbers that is not allowed for the electron in H-atom is

• A. $n=3,l=1,m=-1$
• B. $n=3,l=0,m=0$
• C. $n=2,l=1,m=0$
• D. $n=2,l=2,m=-1$

Answer 1

The correct option is D $n=2,l=2,m=-1$

$n=2$
$l=0,1$
$m_{\ell }=0,\left\{\begin{array}{c}0\\ +1\\ -1\end{array}\right\}$