Question

Enter your answer in the provided box. Use the Rydberg equation to calculate the wavelength (in A) of the photon absorbed when a hydrogen atom undergoes a transition from n = 3 to n = 5.

Answer 1

Here photon will be captured and it will excite the atom

1/lambda = -R* (1/nf^2 - 1/ni^2)

R is Rydberg constant. R = 1.097*10^7 m-1

1/lambda = - R* (1/nf^2 - 1/ni^2)

1/lambda = - 1.097*10^7* (1/5^2 - 1/3^2)

lambda = 1.29*10^-6 m

lambda = 12900 Ao

Answer: 12900 Ao