If the subsidiary quantum number of a sub- energy level is 4, the maximum and minimum values of the spin multiplicities are

When l =4, the number of degenerate orbitals =2l+1=9,

            the maximum total spins $=9\times \frac{1}{2}$and

             maximum total spin $\frac{1}{2}$

            Maximum multiplicity $=2s+1=2\times \frac{9}{2}+1=10$

            Minimum multiplicity $=2\times 12+1=2$