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

Explanation:

According to the question, the desired transition for hydrogen will have the same wavelength as that of He+. n1 = 1 and n2 = 2. ∴ The transition for n2 = 2 to n = 1 in hydrogen spectrum would have the same wavelength as Balmer transition n = 4 to n = 2 of He+ spectrum.