An alkali metal atom is in the ground state. The orbital angular momentum equals zero and the spin angular momentum is entirely due to the single valence electron. A magnetic field is applied that splits the ground state energy level into two levels, 65 μeV apart. A photon absorbed by the atom induces a transition between the two levels. What is the wavelength of the photon? (c = 3.00 * 10^8 m/s, h = 6.626 * 10^-34 J * s, Bohr magneton = μB = 9.27 * 10^-24 J/T, 1 eV = 1.60 * 10^-19 J)