Discussion Forum



1)

Which of the following set of radiations  can not be seen in hydrogen atomic spectrum ?

(i)  $\gamma-$ radiation   (ii) Uv  (iii) X-rays   (iv)  Infrared


A) (i),(iii),(iv)

B) (iii),(iv)

C) (i),(iii)

D) (i),(iv)

Answer:

Option C

Explanation:

 In hydrogen atomic spectra the five series have frequency range as:

 Lyman seris $\rightarrow$  UV region 

 Balmer series $\rightarrow$ Visible region

Paschen series  $\rightarrow$ IR region

Brackett series $\rightarrow$ For I R region

Pfund series $\rightarrow$   IR region