Question

The graph between $|\Psi {|}^2$ and r(radial distance) is shown below. This represents:

• A. 3s orbital
• B. 1s orbital
• C. 2p orbital
• D. 2s orbital

Answer 1

Answer: (D)

2s orbital

Solution:- (D) 2s orbital

Graph of $|{\Psi }^2|$ v/s $r$, touches r axis at 1 point so it has one radial node and since at $r=0$, it has some value so it should be for 's' orbital.

$\therefore n-\ell -1=1$ where $l=0\Rightarrow n-1=1$

$\therefore n=2\Rightarrow 2S$ orbital