An Electron in an Atom Initially Has an Energy 5

Multiple Choice

An electron in an atom initially has an energy 5.5 eV above the ground state energy.It drops to a state with energy 3.2 eV above the ground state energy and emits a photon in the process.The wave associated with the photon has a wavelength of:

A) 5.4 *10 ^{- 7} m
B) 3.0 *10 ^{- 7} m
C) 1.7 *10 ^{- 7} m
D) 1.2*10 ^{- 7} m
E) 1.0 *10 ^{- 7} m