Question

The number of angular nodes and radial nodes in $3s$ orbital are

• A. 0 and 2, respectively
• B. 1 and 0, respectively
• C. 3 and 0, respectively
• D. 0 and 1, respectively

Answer 1

Answer: (A)

No. of angular nodes = $\ell$
No. of Radial nodes $=n-\ell -1$
For $3s;n=3$ and $\ell =0$
$\therefore$ No. of angular nodes = 0
$\therefore$ No. of radial nodes = 2