The Electron in a Hydrogen Atom,originally in Level N =

Multiple Choice

The electron in a hydrogen atom,originally in level n = 10,undergoes a transition to a lower level by emitting a photon of wavelength 1739 nm.What is the final level of the electron? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J·s,R_H = 2.179 × 10^-18 J)

A) ​4
B) ​5
C) ​10
D) ​20
E) 1