Question

By applying Hund's rule, the ground state of Yb+3 and Tb+3 is:

2F7/2 and 7F6

 

2F5/2 and 7F5/2

 

2F6 and 7F6

 

2F7/2 and 7F3/2

Answer 1

$$2F_{7/2}\text{ and }7\text F_6 ​ .$$