1. Na23 has a nuclear spin of 3/2. Using this value of the nuclear spin, draw the hyperfine structure of the sodium D-lines. Making use of the selection rules, draw all the possible transitions. If the orbital motion of an electron results in a magnetic field at the center of the nucleus of the order of 106 gauss, what is the amount of splitting in the case of hyperfine structure of the sodium D-lines of Problem 1? The nuclear g factor for sodium is 1.4, i.e., g, 1.4. 3.