Which electronic transition in a hydrogen atom, starting from the orbit n=7, will produce infrared light of wavelength 2170 nm?
`(Given: R_(H)=1.09677xx10^(7)M^(-1))`

Options

A. `n=7 " to " n=6`
B. from `n=2` to `n=4`
C. from `n=5` to `n=1`
D. from `n=3` to `n=5`

Answer

C