Question

What transition in the hydrogen spectrum would have the same wavelength as the balmer transition n=4 to n=2 of he+ spectrum ?

Answer 1

Answer:

For He+ ion, we have ... Now for hydrogen atom 1/λ = RH [1/n12 -1/n22] ….( ii) ... atom will have the same wavelength as the transition, n = 4 to n = 2

Answer 2

Explanation:

The wave number for Balmer transition of n =4 to n=2 of He⁺ spectrum would be:-

Acc. to question, the transition for Hydrogen will have the same wavelength:-

This equation can only be true when and

The transition of electron from n = 2 to n = 1 in Hydrogen would have the same wavelength as transition of electron from n = 4 to n = 1 in