Question

In the Rybberg's equation a spectral line corresponds to n1= 3 and n2 = 5
(a) calculate the wavelength of the spectral line
(b) to which spectral series does the line belong
(c) in what region of the electromagnetic spectrum will this line fall
​

Answer 1

Answer:

(i) According to Rydberg equation, <br>

<br> where

<br> Substituting the values, <br>

<br>

<br>

<br>

<br> or,

<br> Now

<br> where

<br>

<br> (ii) Since this line corresponds to

, it belongs to Paschen series. <br> (iii) The spectral line will fall in infra-red region.