Atomic structure Online mains 2018:

Q. 30. The correct order of spin-only magnetic moments among the following is :
(atomic number : Mn=25, Co=27, Ni = 28, Zn=30)

Option 
$$\begin{gathered} 1. {\left[NiC{l}_4\right]}^{2-}>{\left[CoC{l}_4\right]}^{2-}>{\left[MnC{l}_4\right]}^{2-}>{\left[ZnC{l}_4\right]}^{2-} \\ 2. {\left[ZnC{l}_4\right]}^{2-}>{\left[NiC{l}_4\right]}^{2-}>{\left[CoC{l}_4\right]}^{2-}>{\left[MnC{l}_4\right]}^{2-} \\ 3. {\left[CoC{l}_4\right]}^{2-}>{\left[MnC{l}_4\right]}^{2-}>{\left[NiC{l}_4\right]}^{2-}> {\left[ZnC{l}_4\right]}^{2-} \\ 4. {\left[MnC{l}_4\right]}^{2-}>{\left[CoC{l}_4\right]}^{2-}{\left[NiC{l}_4\right]}^{2-}> {\left[ZnC{l}_4\right]}^{2-} \end{gathered}$$