Question: A certain orbital has no angular nodes and two radial nodes. The orbital is :
$2 \mathrm{~s}$
$3 \mathrm{~s}$
$3 p$
$2 \mathrm{p}$
Correct Option: , 2
Solution:
$\mathrm{l}=0 \Rightarrow$ 's' orbital
$\mathrm{n}-l-1=2$
$n-1=2$
$\mathrm{n}=3$
