Question

The limiting wave number of Lyman series of hydrogen spectrum is

Answer 1

Answer:

Th answer is 10973731.6m-1.

Explanation:

Using the Rydberg formula:

Wavenumber  = 1/ λ = R (1/n1^2 - 1/n2^2)

Here R = rydberg consatnt = 10973731.6m-1  

n1 = 1 ( For lyman first series)

For limiting or infinte series n2 = α  

Put the value in above formula:

Wavenumber (v)  = 1/ λ = R (1/n1^2 - 1/n2^2)

                           = 10973731.6m-1  (1/1^2 - 1/α^2)

                          =  10973731.6m-1

Thus the wavenumber of the infinite line of the Lyman series is  10973731.6m-1.