Calculate the Wavelength of Light Emitted When an Electron in the Hydrogen

Multiple Choice

Calculate the wavelength of light emitted when an electron in the hydrogen atom goes from the n = 4 shell to the n = 2 shell.

A) 2.06×10⁶ m
B) 4.86×10 ^{- 7} m
C) 3.65×10 ^{- 7} m
D) 4.09×10 ^{- 19} m
E) none of these