When the electron in a hydrogen atom moves from n = 5 to n = 2,light with a wavelength of ________ nm is emitted.
A)93.8
B)410
C)487
D)657
E)434

Question

Quizplus · Accepted Answer

We can use the Rydberg formula to calculate the wavelength of the emitted light:

1/λ = R(1/2^2 - 1/5^2)

where R is the Rydberg constant (1.097x10^7 m^-1). Plugging in the values and solving for λ gives:

λ = 434 nm

When the Electron in a Hydrogen Atom Moves from N