Question

calculate the wavelength of spectral line when the electron in the hydrogen atom undergoes a transition from fourth energy level to second energy level​

Answer 1

Answer:

Explanation:

V

=R[  

x  

1

2

​

 

1

​

−  

x  

2

2

​

 

1

​

]

=109677[  

4  

2

 

1

​

−  

2  

2

 

1

​

]cm  

−1

 

[Here R=108677 cm  

−1

,x  

1

​

=4;x  

2

​

=2

=20564.4 cm  

−1

]

λ=  

V

1

​

=  

20564.4

1

​

 

=486×10  

−7

cm

=486×10  

−9

cm

=486 nm.