$14$ Question $(3$ points$)$

Astronomers have detected hydrogen atoms in interstellar space in the $n=734$ excited state. Suppose an atom in this excited state undergoes a

transition from $n=734$ to $n=731.$

Part $1(1$ point$)$

What is the atom's change in energy as a result of this transition?

$J$

Part $2(1$ point$)$

What is the wavelength of radiation corresponding to this transition?