Problem 6.158

What kind of Zeeman effect, normal or anomalous, is observed in a weak magnetic field in the case of spectral lines caused by the following transitions: (a) ${ }^{1} P \rightarrow{ }^{1} S$ (b) ${ }^{2} D_{5 / 2} \rightarrow{ }^{2} P_{3 / 2}$ (c) ${ }^{3} D_{1} \rightarrow{ }^{3} P_{0}$; (d) ${ }^{5} I_{5} \rightarrow{ }^{5} H_{4} ?$