Question

The number of radial nodes, nodal planes for an orbital with $n=4$, $l=1$ is:

• A. $3,1$
• B. $2,1$
• C. $2,0$
• D. $4,0$

Answer 1

The correct option is B $2,1$

The number of radial nodes

$=n-l-1$

$=4-1-1$

$=2$

The number of nodal planes $=l$ (azimuthal quantum number) $=1$