Zeeman Effect: an Alkali Metal Atom Is in the Ground

Multiple Choice

Zeeman effect: 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 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s, Bohr magneton = μ_B = 9.27 × 10^-24 J/T, 1 eV = 1.60 × 10^-19 J)

A) 19 mm
B) 25 mm
C) 31 mm
D) 38 mm
E) 41 mm