In Bohr's theory of hydrogen atom, the electron jumps from higher orbit n to lower orbit p. The wavelength will be minimum for the transition

Options

A. n=5 to p=4
B. n=4 to p=3
C. n=3 to p=2
D. n=2 to p = 1

Answer

A

Explanation

According to question, From Bohr's theory, the wavelength of radiation emitted is given by
`1/lambda=R[1/n_1^2-1/n_2^2]`
[Symbols have their usual meanings.]
As the energy difference `DeltaE=E_5-E_4` is very small, so minimum wavelength will take place for transition of electron from n=5 to p =4.